-ic a-a a-b a-c a-i aaa aab aac aad aag aai aak ab- aba abb abc abd abg abi abk ac- aca acb acc acd acg aci ack ad- ada adb adc add adg adi adk ag- aga agb agc agd agg agi agk ai- aia aib aic aid aig aii aik aka akb akc akd akg aki akk baa bab bac bad bag bai bak bba bbb bbc bbd bbg bbi bbk bca bcb bcc bcd bcg bci bck bda bdb bdc bdd bdg bdi bdk bga bgb bgc bgd bgg bgi bgk bi- bia bib bic bid big bii bik bka bkb bkc bkg bkk c-- caa cab cac cad cag cai cak cba cbb cbc cbd cbg cbi cbk cca ccb ccc ccd ccg cci cck cda cdb cdc cdd cdg cdi cdk cga cgb cgc cgd cgg cgi ci- cia cib cic cid cig cii cik cka ckb ckc ckd cki daa dab dac dad dag dai dak dba dbb dbc dbd dbg dbi dbk dca dcb dcc dcd dcg dci dck dda ddb ddc ddd ddg ddi ddk dga dgc dgd dgg dgi dgk di- dia dib dic did dig dii dik dka dkb dkc dkg dki dkk g-d gaa gab gac gad gag gai gak gba gbc gbd gbg gbi gbk gca gcb gcc gcd gcg gci gck gda gdb gdc gdd gdi gdk gga ggb ggc ggd ggg ggi gia gib gic gid gig gii gik gka gkb gkd i-d ia- iaa iab iac iad iag iai iba ibb ibc ibd ibg ibi ibk ica icb icc icd icg ici ick ida idb idc idd idg idi idk iga igb igc igd igg igi igk iia iib iic iid iii ika ikb ikc iki ikk ka- kaa kab kac kad kag kai kak kba kbb kbc kbd kbi kbk kca kcb kcc kcd kcg kci kck kda kdb kdc kdg kdk kga kgb kgc kgd kgi kia kib kic kid kig kii kik kkb kkc kki kkk