-al a-a a-b a-c aaa aab aac aad aae aag aak aal ab- aba abb abc abd abe abg abk abl ac- aca acb acc acd ace acg ack acl ad- ada adb adc add ade adg adk adl aea aeb aec aed aee aeg aek ael ag- aga agb agc agd age agg agk agl aka akb akc akd ake akg akk akl al- ala alb alc ald ale alg alk all baa bab bac bad bae bag bak bal bba bbb bbc bbd bbe bbg bbk bbl bca bcb bcc bcd bce bcg bck bcl bda bdb bdc bdd bde bdg bdk bdl be- bea beb bec bed bee beg bek bel bga bgb bgc bgd bge bgg bgk bgl bka bkb bkc bke bkg bkk bkl bla blb blc bld ble blg blk bll c-- caa cab cac cad cae cag cak cal cba cbb cbc cbd cbe cbg cbk cbl cca ccb ccc ccd cce ccg cck ccl cda cdb cdc cdd cde cdg cdk cdl ce- cea ceb cec ced cee ceg cek cel cga cgb cgc cgd cge cgg cgl cka ckb ckc ckd cl- cla clb clc cld cle clg clk cll daa dab dac dad dae dag dak dal dba dbb dbc dbd dbe dbg dbk dbl dca dcb dcc dcd dce dcg dck dcl dda ddb ddc ddd dde ddg ddk ddl de- dea deb dec ded dee deg dek del dga dgc dgd dge dgg dgk dgl dka dkb dkc dke dkg dkk dkl dl- dla dlb dlc dld dle dlg dlk dll eaa eab eac ead eae eag eak eal eba ebb ebc ebd ebe ebg ebk ebl ec- eca ecb ecc ecd ece ecg eck ecl ed- eda edb edc edd ede edg edk edl eea eeb eec eed eee eeg eek eel ega egb egc egd ege egg egl eka ekb ekc ekd eke ekg ekl ela elb elc eld ele elg elk ell g-d gaa gab gac gad gae gag gak gal gba gbc gbd gbe gbg gbk gbl gca gcb gcc gcd gce gcg gck gcl gda gdb gdc gdd gde gdk gdl ge- gea geb gec ged gee geg gek gel gga ggb ggc ggd ggg gka gkb gkd gla glb glc gld gle glg glk gll ka- kaa kab kac kad kae kag kak kal kba kbb kbc kbd kbe kbk kbl kca kcb kcc kcd kce kcg kck kcl kda kdb kdc kde kdg kdk kdl ke- kea keb kec ked kee keg kek kel kga kgb kgc kgd kgl kkb kkc kke kkk kkl kl- kla klb klc kld klg la- laa lab lac lad lae lag lak lal lba lbb lbc lbd lbe lbg lbk lbl lca lcb lcc lcd lce lcg lck lcl lda ldb ldc ldd lde ldg ldk ldl lea leb lec led lee leg lek lel lga lgb lgc lgd lge lgg lgk lgl lka lkb lkg lkl lla llb llc lld lle llg llk lll