-al -ol a-a a-b a-c aaa aab aac aae aag aal aao aau ab- aba abb abc abe abg abl abo abu ac- aca acb acc ace acg acl aco acu aea aeb aec aee aeg ael aeo aeu ag- aga agb agc age agg agl ago agu al- ala alb alc ale alg all alo alu aoa aob aoc aoe aog aol aoo aou au- aua aub auc aue aug aul auo b-u baa bab bac bae bag bal bao bau bba bbb bbc bbe bbg bbl bbo bbu bca bcb bcc bce bcg bcl bco bcu be- bea beb bec bee beg bel beo beu bga bgb bgc bge bgg bgl bgo bgu bla blb blc ble blg bll blo blu boa bob boc boe bog bol boo bou bua bub buc bue bug bul buo buu c-- caa cab cac cae cag cal cao cau cba cbb cbc cbe cbg cbl cbo cbu cca ccb ccc cce ccg ccl cco ccu ce- cea ceb cec cee ceg cel ceo ceu cga cgb cgc cge cgg cgl cgo cgu cl- cla clb clc cle clg cll clo clu co- coa cob coc coe cog col coo cou cua cub cuc cue cug cul cuo cuu eaa eab eac eae eag eal eao eau eba ebb ebc ebe ebg ebl ebo ebu ec- eca ecb ecc ece ecg ecl eco ecu eea eeb eec eee eeg eel eeo ega egb egc ege egg egl ego egu ela elb elc ele elg ell elo elu eo- eoa eob eoc eoe eog eol eoo eou eu- eua eub euc eue eug eul gaa gab gac gae gag gal gao gau gba gbc gbe gbg gbl gbo gbu gca gcb gcc gce gcg gcl gco gcu ge- gea geb gec gee geg gel geo geu gga ggb ggc ggg ggo ggu gla glb glc gle glg gll glo glu goa gob goc goe gog gol goo gou gu- gua gub guc gue gug gul guo guu la- laa lab lac lae lag lal lao lau lba lbb lbc lbe lbg lbl lbo lbu lca lcb lcc lce lcg lcl lco lcu lea leb lec lee leg lel leo leu lga lgb lgc lge lgg lgl lgo lgu lla llb llc lle llg lll llo llu loa lob loc loe log lol loo lou lua lub luc lue lug lul luo luu oaa oab oac oae oag oal oao oau ob- oba obb obc obe obg obl obo obu oc- oca ocb occ ocg ocl oco ocu oea oeb oec oee oeg oel oeo oga ogc oge ogg ogl ogo ola olb olc ole olg oll olo olu oo- ooa oob ooc oog ool ooo ou- oua ouc oue oul ouo ua- uaa uab uac uae uag ual uao uau uba ubb ubc ube ubg ubl ubo ubu uca ucb ucc uce ucg ucl uco ucu uea ueb uec uee ueg uel uga ugb ugc uge ugg ugl ugo ugu ula ulb ulc ule ulg ull ulo ulu uoa uob uoc uoe uog uol uoo uua uuc uue uug uuu