ref: dc593372bfc4224c6cf91d2031d0ad0aeadaddfe
dir: /sys/src/cmd/postscript/g3p9bit/btab/
{"0000110111", 0}, {"010", 1}, {"11", 2}, {"10", 3}, {"011", 4}, {"0011", 5}, {"0010", 6}, {"00011", 7}, {"000101", 8}, {"000100", 9}, {"0000100", 10}, {"0000101", 11}, {"0000111", 12}, {"00000100", 13}, {"00000111", 14}, {"000011000", 15}, {"0000010111", 16}, {"0000011000", 17}, {"0000001000", 18}, {"00001100111", 19}, {"00001101000", 20}, {"00001101100", 21}, {"00000110111", 22}, {"00000101000", 23}, {"00000010111", 24}, {"00000011000", 25}, {"000011001010", 26}, {"000011001011", 27}, {"000011001100", 28}, {"000011001101", 29}, {"000001101000", 30}, {"000001101001", 31}, {"000001101010", 32}, {"000001101011", 33}, {"000011010010", 34}, {"000011010011", 35}, {"000011010100", 36}, {"000011010101", 37}, {"000011010110", 38}, {"000011010111", 39}, {"000001101100", 40}, {"000001101101", 41}, {"000011011010", 42}, {"000011011011", 43}, {"000001010100", 44}, {"000001010101", 45}, {"000001010110", 46}, {"000001010111", 47}, {"000001100100", 48}, {"000001100101", 49}, {"000001010010", 50}, {"000001010011", 51}, {"000000100100", 52}, {"000000110111", 53}, {"000000111000", 54}, {"000000100111", 55}, {"000000101000", 56}, {"000001011000", 57}, {"000001011001", 58}, {"000000101011", 59}, {"000000101100", 60}, {"000001011010", 61}, {"000001100110", 62}, {"000001100111", 63}, {"0000001111", 64}, {"000011001000", 128}, {"000011001001", 192}, {"000001011011", 256}, {"000000110011", 320}, {"000000110100", 384}, {"000000110101", 448}, {"0000001101100", 512}, {"0000001101101", 576}, {"0000001001010", 640}, {"0000001001011", 704}, {"0000001001100", 768}, {"0000001001101", 832}, {"0000001110010", 896}, {"0000001110011", 960}, {"0000001110100", 1024}, {"0000001110101", 1088}, {"0000001110110", 1152}, {"0000001110111", 1216}, {"0000001010010", 1280}, {"0000001010011", 1344}, {"0000001010100", 1408}, {"0000001010101", 1472}, {"0000001011010", 1536}, {"0000001011011", 1600}, {"0000001100100", 1664}, {"0000001100101", 1728}, {"00000001000", 1792}, {"00000001100", 1856}, {"00000001101", 1920}, {"000000010010", 1984}, {"000000010011", 2048}, {"000000010100", 2112}, {"000000010101", 2176}, {"000000010110", 2240}, {"000000010111", 2304}, {"000000011100", 2368}, {"000000011101", 2432}, {"000000011110", 2496}, {"000000011111", 2560}, {"000000000001", -1}, {"000000000000", -2},