b-u bbb bbc bbe bbh bbk bbl bbu bcb bcc bce bch bck bcl bcu be- beb bec bee beh bek bel beu bhb bhc bhe bhh bhk bhl bhu bkb bkc bke bkk bkl blb blc ble blh blk bll blu bub buc bue buh buk bul buu c-- cbb cbc cbe cbh cbk cbl cbu ccb ccc cce cch cck ccl ccu ce- ceb cec cee ceh cek cel ceu ch- chb chc che chh chk chl chu ckb ckc ckh cl- clb clc cle clh clk cll clu cub cuc cue cuh cuk cul cuu ebb ebc ebe ebh ebk ebl ebu ec- ecb ecc ece ech eck ecl ecu eeb eec eee eek eel ehb ehc ehe ehh ehl ehu ekb ekc eke ekh ekl eku elb elc ele elh elk ell elu eu- eub euc eue eul hbb hbc hbe hbh hbk hbl hbu hcb hcc hce hch hck hcl he- heb hec hee heh hek hel heu hhb hhc hhe hhh hhk hhl hhu hkb hkh hkk hkl hku hlb hlc hle hlh hll hlu hub huc hue huh huk hul huu kbb kbc kbe kbh kbk kbl kbu kcb kcc kce kch kck kcl kcu ke- keb kec kee keh kek kel khe khh khk khu kkb kkc kke kkh kkk kkl kku kl- klb klc klh klu kub kuc kue kuh kuk kul kuu lbb lbc lbe lbh lbk lbl lbu lcb lcc lce lch lck lcl lcu leb lec lee leh lek lel leu lhb lhc lhh lhk lhu lkb lkh lkl llb llc lle llk lll llu lub luc lue luh luk lul luu ubb ubc ube ubh ubk ubl ubu ucb ucc uce uch uck ucl ucu ueb uec uee ueh uel uhb uhc uhe uhh uhl uhu ukb ukc uke ukk ukl uku ulb ulc ule ulk ull ulu uuc uue uuu