-ic a-a a-b a-c a-i a-z aaa aab aac aae aai aak aaz ab- aba abb abc abe abi abk abz ac- aca acb acc ace aci ack acz aea aeb aec aee aei aek aez ai- aia aib aic aie aii aik aiz aka akb akc ake aki akk az- aza azb aze azi azz baa bab bac bae bai bak baz bba bbb bbc bbe bbi bbk bca bcb bcc bce bci bck bcz be- bea beb bec bee bei bek bez bi- bia bib bic bie bii bik biz bka bkb bkc bke bkk bza bze bzz c-- caa cab cac cae cai cak caz cba cbb cbc cbe cbi cbk cbz cca ccb ccc cce cci cck ccz ce- cea ceb cec cee cei cek cez ci- cia cib cic cie cii cik cka ckb ckc cki cz- czc cze czk eaa eab eac eae eai eak eaz eba ebb ebc ebe ebi ebk ec- eca ecb ecc ece eci eck eea eeb eec eee eek eia eib eic eie eii eik eka ekb ekc eke eki eze ezz ia- iaa iab iac iae iai iaz iba ibb ibc ibe ibi ibk ibz ica icb icc ice ici ick icz ie- iea iec iee iei iek iia iib iic iie iii ika ikb ikc ike iki ikk iza ize izi izz k-z ka- kaa kab kac kae kai kak kaz kba kbb kbc kbe kbi kbk kbz kca kcb kcc kce kci kck ke- kea keb kec kee kei kek kez kia kib kic kie kii kik kiz kkb kkc kke kki kkk zaa zab zac zai zak zaz zbb zbc zce zea zeb zec zee zek zez zia zib zie zik ziz zka zzz