b-u bbb bbc bbe bbh bbl bbu bcb bcc bce bch bcl bcu be- beb bec bee beh bel beu bhb bhc bhe bhh bhl bhu blb blc ble blh bll blu bub buc bue buh bul buu c-- cbb cbc cbe cbh cbl cbu ccb ccc cce cch ccl ccu ce- ceb cec cee ceh cel ceu ch- chb chc che chh chl chu cl- clb clc cle clh cll clu cub cuc cue cuh cul cuu ebb ebc ebe ebh ebl ebu ec- ecb ecc ece ech ecl ecu eeb eec eee eel ehb ehc ehe ehh ehl ehu elb elc ele elh ell elu eu- eub euc eue eul hbb hbc hbe hbh hbl hbu hcb hcc hce hch hcl he- heb hec hee heh hel heu hhb hhc hhe hhh hhl hhu hlb hlc hle hlh hll hlu hub huc hue huh hul huu lbb lbc lbe lbh lbl lbu lcb lcc lce lch lcl lcu leb lec lee leh lel leu lhb lhc lhh lhu llb llc lle lll llu lub luc lue luh lul luu ubb ubc ube ubh ubl ubu ucb ucc uce uch ucl ucu ueb uec uee ueh uel uhb uhc uhe uhh uhl uhu ulb ulc ule ull ulu uuc uue uuu