-ic b-u bbb bbc bbd bbi bbk bbq bbr bbu bcb bcc bcd bci bck bcq bcr bcu bdb bdc bdd bdi bdk bdq bdr bdu bi- bib bic bid bii bik bir biu bkb bkc bkk bkq bkr bqc bqd brb brd bri brk brq brr bru bub buc bud bui buk bur buu c-- cbb cbc cbd cbi cbk cbq cbr cbu ccb ccc ccd cci cck ccr ccu cdb cdc cdd cdi cdk cdq cdr cdu ci- cib cic cid cii cik ciq cir ciu ckb ckc ckd cki cqb cqc cqd cqi crb crc crd cri crk crq crr cru cub cuc cud cui cuk cuq cur cuu dbb dbc dbd dbi dbk dbq dbr dbu dcb dcc dcd dci dck dcr dcu ddb ddc ddd ddi ddk ddq ddr ddu di- dib dic did dii dik diq dir diu dkb dkc dki dkk dkr dku drb drc drd dri drk drq drr dru dub duc dud dui duk dur i-d ibb ibc ibd ibi ibk ibr ibu icb icc icd ici ick icq icr icu idb idc idd idi idk idq idr idu iib iic iid iii iir iiu ikb ikc iki ikk ikr iku iqc iqd iqu ir- irb irc ird iri irk irq irr iru iu- iub iuc iud iui iur kbb kbc kbd kbi kbk kbr kbu kcb kcc kcd kci kck kcr kcu kdb kdc kdk kdr kdu kib kic kid kii kik kir kiu kkb kkc kki kkk kkr kku krc krd kri krk krr kru kub kuc kud kui kuk kur kuu qbc qbd qbq qcc qcd qci qdb qdr qic qid qik qir qiu qki qqk qqq qqu qrb qrc qri qru qu- qud qui qur rbb rbc rbd rbi rbk rbr rbu rcb rcc rcd rci rcr rcu rdb rdc rdd rdi rdr rdu rib ric rid rii rik riq rir rkb rkc rkk rku rqc rrb rrc rrd rri rrk rrq rrr rru rub ruc rud rui ruk rur ruu ubb ubc ubi ubk ubr ubu ucb ucc ucd uci uck ucr ucu udb udc udd udi udk udr udu uib uic uid uii uiq uir uiu ukb ukc uki ukk ukr uku ur- urb urc urd uri urk urr uru uuc uur uuu