b-u bbb bbd bbh bbk bbl bbm bbu bdb bdd bdh bdk bdl bdm bdu bhb bhd bhh bhk bhl bhm bhu bkb bkk bkl bkm blb bld blh blk bll blm blu bmb bmd bmh bmk bml bmm bmu bub bud buh buk bul bum buu dbb dbd dbh dbk dbl dbm dbu ddb ddd ddh ddk ddl ddm ddu dh- dhb dhd dhh dhk dhl dhm dhu dkb dkk dkl dkm dku dl- dlb dld dlh dlk dll dlm dlu dmb dmd dmh dmk dml dmm dmu dub dud duh duk dul dum hbb hbd hbh hbk hbl hbm hbu hdb hdd hdh hdk hdl hdm hdu hhb hhd hhh hhk hhl hhm hhu hkb hkd hkh hkk hkl hkm hku hlb hld hlh hll hlm hlu hmb hmd hmh hmk hml hmm hmu hub hud huh huk hul hum huu kbb kbd kbh kbk kbl kbm kbu kdb kdh kdk kdl kdm kdu khh khk khm khu kkb kkh kkk kkl kkm kku kl- klb kld klh klm klu kmb kmd kmh kmk kml kmm kmu kub kud kuh kuk kul kum kuu lbb lbd lbh lbk lbl lbm lbu ldb ldd ldh ldk ldl ldm ldu lhb lhd lhh lhk lhu lkb lkh lkl llb lld llk lll llm llu lmb lmd lmh lmk lml lmm lmu lub lud luh luk lul lum luu mbb mbd mbh mbk mbl mbm mbu mdb mdd mdh mdk mdl mdm mdu mhd mhh mhk mhl mhm mhu mkb mkd mkh mkk mkl mkm mku mlb mld mlh mlk mll mlm mlu mmb mmd mmh mmk mml mmm mmu mub mud muh muk mul mum muu ubb ubh ubk ubl ubu udb udd udk udl udm udu uhb uhd uhh uhl uhm uhu ukb ukk ukl uku ulb uld ulk ull ulm ulu um- umb umd umh uml umm umu uum uuu