-ic b-u bbb bbc bbe bbi bbk bbt bbu bcb bcc bce bci bck bct bcu bcz be- beb bec bee bei bek bet beu bez bi- bib bic bie bii bik bit biu biz bkb bkc bke bkk bkt btb btc bte bti btk btt btu btz bub buc bue bui buk but buu buz bze bzu bzz c-- cbb cbc cbe cbi cbk cbt cbu cbz ccb ccc cce cci cck cct ccu ccz ce- ceb cec cee cei cek cet ceu cez ci- cib cic cie cii cik cit ciu ckb ckc cki ckt ctb ctc cte cti ctk ctt ctu ctz cub cuc cue cui cuk cut cuu cuz cz- czc cze czk czt ebb ebc ebe ebi ebk ebt ebu ec- ecb ecc ece eci eck ect ecu eeb eec eee eek eet eib eic eie eii eik eit eiu ekb ekc eke eki ekt eku etb etc ete eti etk ett etu etz eu- eub euc eue eui eut eze ezz ibb ibc ibe ibi ibk ibt ibu ibz icb icc ice ici ick ict icu icz ie- iec iee iei iek iet iib iic iie iii iit iiu ikb ikc ike iki ikk ikt iku itb itc ite iti itk itt itu itz iu- iub iuc iue iui iut iuz ize izi izu izz k-t k-z kbb kbc kbe kbi kbk kbu kbz kcb kcc kce kci kck kct kcu ke- keb kec kee kei kek ket kez kib kic kie kii kik kit kiu kiz kkb kkc kke kki kkk kkt kku ktb ktc kte ktk ktt ktu kub kuc kue kui kuk kut kuu tbb tbc tbe tbi tbk tbt tbu tbz tcb tcc tce tci tck tct tcu te- teb tec tee tei tek tet teu tez tib tic tie tii tik tit tiu tiz tkb tkc tke tkk tkt tkz ttb ttc tte tti ttk ttt ttu tub tuc tue tui tuk tut tuu tuz tze tzu ubb ubc ube ubi ubk ubt ubu ucb ucc uce uci uck uct ucu ueb uec uee uei uet uib uic uie uii uit uiu ukb ukc uke uki ukk uku ukz utb utc ute uti utk utt utu utz uuc uue uut uuu uzb uzi uzu zbb zbc zbt zce zeb zec zee zek zet zez zib zie zik zit ziz zte zub zuc zui zuk zut zuz zzt zzz