-ic a-a a-b a-c a-i aaa aab aac aae aah aai aak ab- aba abb abc abe abh abi abk ac- aca acb acc ace ach aci ack aea aeb aec aee aeh aei aek aha ahb ahc ahe ahh ahi ahk ai- aia aib aic aie aih aii aik aka akb akc ake akh aki akk baa bab bac bae bah bai bak bba bbb bbc bbe bbh bbi bbk bca bcb bcc bce bch bci bck be- bea beb bec bee beh bei bek bha bhb bhc bhe bhh bhi bhk bi- bia bib bic bie bih bii bik bka bkb bkc bke bkk c-- caa cab cac cae cah cai cak cba cbb cbc cbe cbh cbi cbk cca ccb ccc cce cch cci cck ce- cea ceb cec cee ceh cei cek ch- cha chb chc che chh chi chk ci- cia cib cic cie cih cii cik cka ckb ckc ckh cki eaa eab eac eae eah eai eak eba ebb ebc ebe ebh ebi ebk ec- eca ecb ecc ece ech eci eck eea eeb eec eee eek eha ehb ehc ehe ehh ehi eia eib eic eie eii eik eka ekb ekc eke ekh eki h-i haa hab hac hae hah hai hak hba hbb hbc hbe hbh hbi hbk hca hcb hcc hce hch hci hck he- hea heb hec hee heh hei hek hha hhb hhc hhe hhh hhi hhk hia hib hic hie hih hii hik hka hkb hkh hki hkk ia- iaa iab iac iae iah iai iba ibb ibc ibe ibh ibi ibk ica icb icc ice ich ici ick ie- iea iec iee iei iek iha ihb ihc ihe ihh ihi ihk iia iib iic iie iih iii ika ikb ikc ike iki ikk ka- kaa kab kac kae kah kai kak kba kbb kbc kbe kbh kbi kbk kca kcb kcc kce kch kci kck ke- kea keb kec kee keh kei kek kha khe khh khi khk kia kib kic kie kih kii kik kkb kkc kke kkh kki kkk