bbbb bbch bbci bbeb bcbc bccc bcci bcec bche bcie bebb bebe bebi bech beci beeb beic bhcc bhie bibb bibe bibi bicc bice bich bici bieb bihe bihi cbbc cbcc cbce cbec cbee ccbc cccb cccc ccci ccee cche ccic ccii cec- cece ceci ceeb ceec chce chch chci cheb chec chee cheh chib chic chie chih cibc cibe cibi cicc cich cici ciee ciii ebbc ebcc ebic ecbc ecbe eccb eccc ecce ecci eche ecib eeee ehcc eheh eich eiec eiei h-ii hbic hcbc hccb hccc hcch hchi hebb hebe hebi hech heeb hehe heic heie heih hhhh hi-c hibi hicc hice hich hiei hihc hihe hihi hiie i-be ibec ibeh ibie icbc iccb iccc icci icec icee ichc iche ichi iecc ieie ihcc iiie iiii