-ic a-a a-b a-c a-i a-z aaa aab aac aai aak aan aar aaz ab- aba abb abc abi abk abn abr abz ac- aca acb acc aci ack acn acr acz ai- aia aib aic aii aik ain air aiz aka akb akc aki akk akn akr an- ana anb anc ani ank ann anr anz ar- ara arb arc ari ark arn arr arz az- aza azb azi azn azz baa bab bac bai bak ban bar baz bba bbb bbc bbi bbk bbn bbr bca bcb bcc bci bck bcn bcr bcz bi- bia bib bic bii bik bin bir biz bka bkb bkc bkk bkn bkr bna bnb bnc bni bnk bnn bnr bnz bra brb bri brk brn brr brz bza bzn bzr bzz c-- caa cab cac cai cak can car caz cba cbb cbc cbi cbk cbn cbr cbz cca ccb ccc cci cck ccn ccr ccz ci- cia cib cic cii cik cin cir cka ckb ckc cki cn- cna cnb cnc cni cnn cnr cra crb crc cri crk crn crr crz cz- czc czk ia- iaa iab iac iai ian iar iaz iba ibb ibc ibi ibk ibn ibr ibz ica icb icc ici ick icn icr icz iia iib iic iii iin iir ika ikb ikc iki ikk ikr in- ina inb inc ini ink inn inr ir- ira irb irc iri irk irn irr iza izi izz k-z ka- kaa kab kac kai kak kan kar kaz kba kbb kbc kbi kbk kbn kbr kbz kca kcb kcc kci kck kcn kcr kia kib kic kii kik kin kir kiz kkb kkc kki kkk kkn kkr kn- kna knc kni knk knn knr kra krc kri krk krn krr n-i naa nab nac nai nak nan nar naz nba nbb nbc nbi nbk nbn nbr nca ncb ncc nci nck ncn ncr nia nib nic nii nik nin nir niz nka nkc nki nkk nkn nkr nna nnb nnc nni nnk nnn nnz nra nrb nrc nri nrk nrn nrr nrz nzb nzi nzz ra- raa rab rac rai rak ran rar raz rba rbb rbc rbi rbk rbn rbr rca rcb rcc rci rcn rcr ria rib ric rii rik rin rir riz rkb rkc rkk rkz rna rnb rnc rni rnn rnr rnz rra rrb rrc rri rrk rrn rrr rza rzb zaa zab zac zai zak zan zar zaz zbb zbc zbr zia zib zik zin zir ziz zka znc znn zzr zzz