b-u bbb bbc bbe bbh bbo bbu bcb bcc bce bch bco bcu be- beb bec bee beh beo beu bhb bhc bhe bhh bho bhu bob boc boe boh boo bou bub buc bue buh buo buu c-- cbb cbc cbe cbh cbo cbu ccb ccc cce cch cco ccu ce- ceb cec cee ceh ceo ceu ch- chb chc che chh cho chu co- cob coc coe coh coo cou cub cuc cue cuh cuo cuu ebb ebc ebe ebh ebo ebu ec- ecb ecc ece ech eco ecu eeb eec eee eeo ehb ehc ehe ehh eho ehu eo- eob eoc eoe eoh eoo eou eu- eub euc eue hbb hbc hbe hbh hbo hbu hcb hcc hce hch hco he- heb hec hee heh heo heu hhb hhc hhe hhh hho hhu hob hoc hoe hoh hoo hou hub huc hue huh huo huu ob- obb obc obe obh obo obu oc- ocb occ och oco ocu oeb oec oee oeh oeo ohc ohe ohh oho ohu oo- oob ooc ooh ooo ou- ouc oue ouh ouo ubb ubc ube ubh ubo ubu ucb ucc uce uch uco ucu ueb uec uee ueh uhb uhc uhe uhh uho uhu uob uoc uoe uoo uuc uue uuu