-ic a-a a-b a-c a-i aaa aab aac aad aah aai ab- aba abb abc abd abh abi ac- aca acb acc acd ach aci ad- ada adb adc add adh adi aha ahb ahc ahd ahh ahi ai- aia aib aic aid aih aii baa bab bac bad bah bai bba bbb bbc bbd bbh bbi bca bcb bcc bcd bch bci bda bdb bdc bdd bdh bdi bha bhb bhc bhd bhh bhi bi- bia bib bic bid bih bii c-- caa cab cac cad cah cai cba cbb cbc cbd cbh cbi cca ccb ccc ccd cch cci cda cdb cdc cdd cdh cdi ch- cha chb chc chd chh chi ci- cia cib cic cid cih cii daa dab dac dad dah dai dba dbb dbc dbd dbh dbi dca dcb dcc dcd dci dda ddb ddc ddd ddh ddi dh- dha dhb dhc dhd dhh dhi di- dia dib dic did dih dii h-i haa hab hac had hah hai hba hbb hbc hbd hbh hbi hca hcb hcc hcd hch hci hda hdb hdc hdd hdh hdi hha hhb hhc hhd hhh hhi hia hib hic hid hih hii i-d ia- iaa iab iac iad iah iai iba ibb ibc ibd ibh ibi ica icb icc icd ich ici ida idb idc idd idh idi iha ihb ihc ihd ihh ihi iia iib iic iid iih iii