/* Defining polynomial */
x^2 - x + 20
/* Minimal vectors */
[
    <-w + 4, -6>,
    <-5*w + 5, 3*w - 22>,
    <5, -w - 3>,
    <2*w + 18, -5*w - 3>,
    <w + 1, -w + 3>,
    <10, -2*w - 7>,
    <w, -w + 4>,
    <-2*w + 2, w - 9>,
    <w + 2, -w + 3>,
    <5, -w - 2>,
    <-w + 8, -w - 8>,
    <-w + 13, -2*w - 10>,
    <3*w, -2*w + 12>,
    <w + 1, -w + 4>,
    <-3*w + 2, 2*w - 14>,
    <3*w + 3, -3*w + 11>,
    <-w + 13, -2*w - 12>,
    <14, -3*w - 8>,
    <w + 6, -2*w + 1>,
    <3*w + 8, -4*w + 8>,
    <3*w + 4, -3*w + 10>,
    <1, -1>,
    <w + 2, -w + 2>,
    <6, -w - 3>,
    <0, 1>,
    <1, 0>,
    <-w + 3, -5>
]
/* Voronoi top cells */
[
    { 1, 2, 3, 4 },
    { 3, 5, 6, 7 },
    { 8, 9, 10, 11, 12, 13 },
    { 3, 14, 15, 16, 17, 18 },
    { 3, 16, 19, 20 },
    { 3, 8, 19, 21 },
    { 1, 3, 8, 9 },
    { 1, 2, 3, 5 },
    { 1, 5, 9, 22, 23, 24 },
    { 3, 5, 7, 22 },
    { 8, 9, 10, 11, 19 },
    { 10, 11, 14, 19 },
    { 3, 14, 16, 18, 19 },
    { 3, 8, 9, 19 },
    { 1, 3, 5, 9, 22 },
    { 3, 9, 10, 14, 19 },
    { 3, 9, 10, 14, 22, 25 },
    { 9, 10, 22, 25, 26, 27 }
]
/* Faces of top cells */
[
    [
        { 2, 3, 4 },
        { 1, 3, 4 },
        { 1, 2, 4 },
        { 1, 2, 3 }
    ],
    [
        { 3, 6, 7 },
        { 5, 6, 7 },
        { 3, 5, 7 },
        { 3, 5, 6 }
    ],
    [
        { 9, 10, 12, 13 },
        { 8, 9, 10, 11 },
        { 8, 11, 12, 13 },
        { 10, 11, 12 },
        { 8, 9, 13 }
    ],
    [
        { 3, 15, 16 },
        { 3, 14, 16, 18 },
        { 3, 14, 15, 17 },
        { 15, 16, 17, 18 },
        { 14, 17, 18 }
    ],
    [
        { 3, 19, 20 },
        { 16, 19, 20 },
        { 3, 16, 20 },
        { 3, 16, 19 }
    ],
    [
        { 3, 19, 21 },
        { 3, 8, 19 },
        { 8, 19, 21 },
        { 3, 8, 21 }
    ],
    [
        { 1, 3, 9 },
        { 1, 3, 8 },
        { 3, 8, 9 },
        { 1, 8, 9 }
    ],
    [
        { 1, 2, 3 },
        { 2, 3, 5 },
        { 1, 3, 5 },
        { 1, 2, 5 }
    ],
    [
        { 9, 22, 23, 24 },
        { 1, 5, 9, 22 },
        { 5, 22, 23 },
        { 1, 5, 23, 24 },
        { 1, 9, 24 }
    ],
    [
        { 3, 5, 7 },
        { 3, 7, 22 },
        { 5, 7, 22 },
        { 3, 5, 22 }
    ],
    [
        { 9, 10, 19 },
        { 8, 9, 19 },
        { 8, 9, 10, 11 },
        { 8, 11, 19 },
        { 10, 11, 19 }
    ],
    [
        { 10, 11, 19 },
        { 11, 14, 19 },
        { 10, 11, 14 },
        { 10, 14, 19 }
    ],
    [
        { 3, 16, 19 },
        { 3, 14, 19 },
        { 3, 14, 16, 18 },
        { 14, 18, 19 },
        { 16, 18, 19 }
    ],
    [
        { 3, 9, 19 },
        { 3, 8, 19 },
        { 8, 9, 19 },
        { 3, 8, 9 }
    ],
    [
        { 3, 9, 22 },
        { 3, 5, 22 },
        { 1, 5, 9, 22 },
        { 1, 3, 5 },
        { 1, 3, 9 }
    ],
    [
        { 3, 9, 19 },
        { 3, 14, 19 },
        { 3, 9, 10, 14 },
        { 10, 14, 19 },
        { 9, 10, 19 }
    ],
    [
        { 3, 9, 10, 14 },
        { 3, 9, 22 },
        { 3, 14, 22, 25 },
        { 9, 10, 22, 25 },
        { 10, 14, 25 }
    ],
    [
        { 9, 10, 22, 25 },
        { 9, 22, 26, 27 },
        { 9, 10, 27 },
        { 10, 25, 26, 27 },
        { 22, 25, 26 }
    ]
]
/* Order of PGL_2(O) stabilizers of Voronoi top cells */
[ 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 6 ]
/* GAP id of GL_2(O) stabilizers of Voronoi top cells */
[ <2, 1>, <2, 1>, <4, 1>, <4, 1>, <2, 1>, <2, 1>, <2, 1>, <2, 1>, <4, 1>, <2, 
1>, <2, 1>, <2, 1>, <2, 1>, <2, 1>, <2, 1>, <2, 1>, <4, 1>, <12, 1> ]