-ic -up b-p b-u bbb bbc bbe bbi bbk bbo bbp bbu bcb bcc bce bci bck bco bcp bcu be- beb bec bee bei bek beo bep beu bi- bib bic bie bii bik bio bip biu bkb bkc bke bkk bko bkp bob boc boe boi bok boo bop bou bpb bpc bpe bpi bpo bpp bpu bub buc bue bui buk buo bup buu c-- cbb cbc cbe cbi cbk cbo cbp cbu ccb ccc cce cci cck cco ccp ccu ce- ceb cec cee cei cek ceo cep ceu ci- cib cic cie cii cik cio cip ciu ckb ckc cki cko co- cob coc coe coi cok coo cop cou cpb cpc cpe cpi cpk cpo cpp cpu cub cuc cue cui cuk cuo cup cuu ebb ebc ebe ebi ebk ebo ebp ebu ec- ecb ecc ece eci eck eco ecu eeb eec eee eek eeo eep eib eic eie eii eik eio eip eiu ekb ekc eke eki eko ekp eku eo- eob eoc eoe eoi eok eoo eop eou ep- epb epc epe epi epo epp epu eu- eub euc eue eui eup ibb ibc ibe ibi ibk ibo ibp ibu icb icc ice ici ick ico icp icu ie- iec iee iei iek iep iib iic iie iii iio iip iiu ikb ikc ike iki ikk iko iku io- iob ioc ioe ioi ioo iop iou ipb ipc ipe ipi ipo ipp ipu iu- iub iuc iue iui iup kbb kbc kbe kbi kbk kbo kbp kbu kcb kcc kce kci kck kcp kcu ke- keb kec kee kei kek keo kep kib kic kie kii kik kio kip kiu kkb kkc kke kki kkk kkp kku kob koc koe koi kok koo kop kou kpc kpe kpi kpk kpo kpp kpu kub kuc kue kui kuk kup kuu o-i ob- obb obc obe obi obk obo obp obu oc- ocb occ oci ock oco ocp ocu oeb oec oee oei oeo oep oib oic oie oii oik oio oip oiu okb okc oke oki okk oko okp oku oo- oob ooc ooi ook ooo oop op- opb opc ope opi opk opo opp ou- ouc oue oui ouk ouo oup p-p pbb pbc pbe pbi pbk pbo pbp pbu pcb pcc pce pci pck pco pcp pcu peb pec pee pei pek peo pep peu pib pic pie pii pik pio pip piu pkb pkc pke pki pko pkp pku pob poc poe poi pok poo pop pou ppb ppc ppe ppi ppk ppo ppp ppu pub puc pue pui puk pup puu ubb ubc ube ubi ubk ubo ubp ubu ucb ucc uce uci uck uco ucp ucu ueb uec uee uei uep uib uic uie uii uio uip uiu ukb ukc uke uki ukk ukp uku uob uoc uoe uok uoo uop up- upb upc upe upi upk upo upp upu uuc uue uuu