-ic b-u bbb bbc bbe bbi bbk bbu bcb bcc bce bci bck bcu bcz be- beb bec bee bei bek beu bez bi- bib bic bie bii bik biu biz bkb bkc bke bkk bub buc bue bui buk buu buz bze bzu bzz c-- cbb cbc cbe cbi cbk cbu cbz ccb ccc cce cci cck ccu ccz ce- ceb cec cee cei cek ceu cez ci- cib cic cie cii cik ciu ckb ckc cki cub cuc cue cui cuk cuu cuz cz- czc cze czk ebb ebc ebe ebi ebk ebu ec- ecb ecc ece eci eck ecu eeb eec eee eek eib eic eie eii eik eiu ekb ekc eke eki eku eu- eub euc eue eui eze ezz ibb ibc ibe ibi ibk ibu ibz icb icc ice ici ick icu icz ie- iec iee iei iek iib iic iie iii iiu ikb ikc ike iki ikk iku iu- iub iuc iue iui iuz ize izi izu izz k-z kbb kbc kbe kbi kbk kbu kbz kcb kcc kce kci kck kcu ke- keb kec kee kei kek kez kib kic kie kii kik kiu kiz kkb kkc kke kki kkk kku kub kuc kue kui kuk kuu ubb ubc ube ubi ubk ubu ucb ucc uce uci uck ucu ueb uec uee uei uib uic uie uii uiu ukb ukc uke uki ukk uku ukz uuc uue uuu uzb uzi uzu zbb zbc zce zeb zec zee zek zez zib zie zik ziz zub zuc zui zuk zuz zzz