<<< native
[ EGrouped
    [ ENumber "1"
    , ENumber "2"
    , ESpace (0 % 1)
    , ENumber "3"
    , ENumber "4"
    , ESpace (0 % 1)
    , ENumber "5"
    , ENumber "6"
    , ESpace (0 % 1)
    , ENumber "7"
    , ENumber "8"
    , ESpace (0 % 1)
    , ENumber "9"
    , ENumber "10"
    , ESpace (0 % 1)
    , ENumber "11"
    , ENumber "12"
    ]
, EGrouped
    [ ENumber "11"
    , ENumber "12"
    , ESpace (0 % 1)
    , ENumber "13"
    , ENumber "14"
    , ESpace (0 % 1)
    , ENumber "15"
    , ENumber "16"
    , ESpace (0 % 1)
    , ENumber "17"
    , ENumber "18"
    , ESpace (0 % 1)
    , ENumber "19"
    , ENumber "20"
    , ESpace (0 % 1)
    , ENumber "21"
    , ENumber "22"
    , ESpace (0 % 1)
    , ENumber "21"
    , ENumber "22"
    , ESpace (0 % 1)
    , ENumber "23"
    , ENumber "24"
    ]
, EGrouped
    [ ENumber "25"
    , ENumber "26"
    , ESpace (0 % 1)
    , ENumber "27"
    , ENumber "28"
    , ESpace (0 % 1)
    , ENumber "29"
    , ENumber "30"
    , ESpace (0 % 1)
    , ENumber "31"
    , ENumber "32"
    ]
, EGrouped
    [ ENumber "31"
    , ENumber "32"
    , ESpace (0 % 1)
    , ENumber "33"
    , ENumber "34"
    , ESpace (0 % 1)
    , ENumber "35"
    , ENumber "36"
    , ESpace (0 % 1)
    , ENumber "37"
    , ENumber "38"
    , ESpace (0 % 1)
    , ENumber "39"
    , ENumber "40"
    , ESpace (0 % 1)
    , ENumber "41"
    , ENumber "42"
    , ESpace (0 % 1)
    , ENumber "41"
    , ENumber "42"
    , ESpace (0 % 1)
    , ENumber "43"
    , ENumber "44"
    , ESpace (0 % 1)
    , ENumber "45"
    , ENumber "46"
    , ESpace (0 % 1)
    , ENumber "47"
    , ENumber "48"
    , ESpace (0 % 1)
    , ENumber "49"
    , ENumber "50"
    , ESpace (0 % 1)
    , ENumber "51"
    , ENumber "52"
    , ESpace (0 % 1)
    , ENumber "51"
    , ENumber "52"
    , ESpace (0 % 1)
    , ENumber "53"
    , ENumber "54"
    , ESpace (0 % 1)
    , ENumber "55"
    , ENumber "56"
    , ESpace (0 % 1)
    , ENumber "57"
    , ENumber "58"
    , ESpace (0 % 1)
    , ENumber "59"
    , ENumber "60"
    , ESpace (0 % 1)
    , ENumber "61"
    , ENumber "62"
    , ESpace (0 % 1)
    , ENumber "61"
    , ENumber "62"
    , ESpace (0 % 1)
    , ENumber "63"
    , ENumber "64"
    ]
]
>>> eqn
{1 2 fwd 0 3 4 fwd 0 5 6 fwd 0 7 8 fwd 0 9 10 fwd 0 11 12} {11 12 fwd 0 13 14 fwd 0 15 16 fwd 0 17 18 fwd 0 19 20 fwd 0 21 22 fwd 0 21 22 fwd 0 23 24} {25 26 fwd 0 27 28 fwd 0 29 30 fwd 0 31 32} {31 32 fwd 0 33 34 fwd 0 35 36 fwd 0 37 38 fwd 0 39 40 fwd 0 41 42 fwd 0 41 42 fwd 0 43 44 fwd 0 45 46 fwd 0 47 48 fwd 0 49 50 fwd 0 51 52 fwd 0 51 52 fwd 0 53 54 fwd 0 55 56 fwd 0 57 58 fwd 0 59 60 fwd 0 61 62 fwd 0 61 62 fwd 0 63 64}