-ic a-a a-b a-c a-i aaa aab aac aad aae aag aah aai aak ab- aba abb abc abd abe abg abh abi abk ac- aca acb acc acd ace acg ach aci ack ad- ada adb adc add ade adg adh adi adk aea aeb aec aed aee aeg aeh aei aek ag- aga agb agc agd age agg agh agi agk aha ahb ahc ahd ahe ahg ahh ahi ahk ai- aia aib aic aid aie aig aih aii aik aka akb akc akd ake akg akh aki akk baa bab bac bad bae bag bah bai bak bba bbb bbc bbd bbe bbg bbh bbi bbk bca bcb bcc bcd bce bcg bch bci bck bda bdb bdc bdd bde bdg bdh bdi bdk be- bea beb bec bed bee beg beh bei bek bga bgb bgc bgd bge bgg bgh bgi bgk bha bhb bhc bhd bhe bhg bhh bhi bhk bi- bia bib bic bid bie big bih bii bik bka bkb bkc bke bkg bkk c-- caa cab cac cad cae cag cah cai cak cba cbb cbc cbd cbe cbg cbh cbi cbk cca ccb ccc ccd cce ccg cch cci cck cda cdb cdc cdd cde cdg cdh cdi cdk ce- cea ceb cec ced cee ceg ceh cei cek cga cgb cgc cgd cge cgg cgh cgi ch- cha chb chc chd che chg chh chi chk ci- cia cib cic cid cie cig cih cii cik cka ckb ckc ckd ckh cki daa dab dac dad dae dag dah dai dak dba dbb dbc dbd dbe dbg dbh dbi dbk dca dcb dcc dcd dce dcg dci dck dda ddb ddc ddd dde ddg ddh ddi ddk de- dea deb dec ded dee deg deh dei dek dga dgc dgd dge dgg dgh dgi dgk dh- dha dhb dhc dhd dhe dhh dhi dhk di- dia dib dic did die dig dih dii dik dka dkb dkc dke dkg dki dkk eaa eab eac ead eae eag eah eai eak eba ebb ebc ebd ebe ebg ebh ebi ebk ec- eca ecb ecc ecd ece ecg ech eci eck ed- eda edb edc edd ede edg edh edi edk eea eeb eec eed eee eeg eek ega egb egc egd ege egg egh egi eha ehb ehc ehd ehe ehg ehh ehi eia eib eic eid eie eig eii eik eka ekb ekc ekd eke ekg ekh eki g-d gaa gab gac gad gae gag gah gai gak gba gbc gbd gbe gbg gbh gbi gbk gca gcb gcc gcd gce gcg gch gci gck gda gdb gdc gdd gde gdh gdi gdk ge- gea geb gec ged gee geg geh gei gek gga ggb ggc ggd ggg ggh ggi gha ghb ghc ghd ghe ghg ghh ghi gia gib gic gid gie gig gih gii gik gka gkb gkd gkh h-i haa hab hac had hae hag hah hai hak hba hbb hbc hbd hbe hbg hbh hbi hbk hca hcb hcc hcd hce hcg hch hci hck hda hdb hdc hdd hde hdg hdh hdi hdk he- hea heb hec hed hee heg heh hei hek hga hgb hgc hge hgg hgh hgi hgk hha hhb hhc hhd hhe hhg hhh hhi hhk hia hib hic hid hie hig hih hii hik hka hkb hkd hkg hkh hki hkk i-d ia- iaa iab iac iad iae iag iah iai iba ibb ibc ibd ibe ibg ibh ibi ibk ica icb icc icd ice icg ich ici ick ida idb idc idd ide idg idh idi idk ie- iea iec ied iee ieg iei iek iga igb igc igd ige igg igh igi igk iha ihb ihc ihd ihe ihg ihh ihi ihk iia iib iic iid iie iih iii ika ikb ikc ike iki ikk ka- kaa kab kac kad kae kag kah kai kak kba kbb kbc kbd kbe kbh kbi kbk kca kcb kcc kcd kce kcg kch kci kck kda kdb kdc kde kdg kdh kdk ke- kea keb kec ked kee keg keh kei kek kga kgb kgc kgd kgh kgi kha khe khh khi khk kia kib kic kid kie kig kih kii kik kkb kkc kke kkh kki kkk