-al -er a-a a-b aaa aab aae aag aal aar aau aav ab- aba abb abe abg abl abr abu abv aea aeb aee aeg ael aer aeu aev ag- aga agb age agg agl agr agu agv al- ala alb ale alg all alr alu alv ar- ara arb are arg arl arr aru arv au- aua aub aue aug aul aur auv av- ava avb ave avg avl avr avu b-u baa bab bae bag bal bar bau bav bba bbb bbe bbg bbl bbr bbu be- bea beb bee beg bel ber beu bev bga bgb bge bgg bgl bgr bgu bgv bla blb ble blg bll blr blu blv bra brb bre brg brl brr bru brv bua bub bue bug bul bur buu bva bvb bve bvg bvl bvr bvu bvv eaa eab eae eag eal ear eau eav eba ebb ebe ebg ebl ebr ebu ebv eea eeb eee eeg eel eer eev ega egb ege egg egl egr egu ela elb ele elg ell elr elu elv era erb ere erg erl err eru erv eu- eua eub eue eug eul eur euv eva evb eve evg evl evr evv gaa gab gae gag gal gar gau gav gba gbe gbg gbl gbr gbu gbv ge- gea geb gee geg gel ger geu gev gga ggb ggg ggr ggu ggv gla glb gle glg gll glr glu glv gra grb gre grg grl grr gru grv gu- gua gub gue gug gul gur guu guv gva gvb gve gvg gvl gvr gvu la- laa lab lae lag lal lar lau lav lba lbb lbe lbg lbl lbr lbu lbv lea leb lee leg lel ler leu lev lga lgb lge lgg lgl lgr lgu lgv lla llb lle llg lll llr llu llv lra lrb lrg lrr lru lrv lua lub lue lug lul lur luu luv lva lvb lve lvg lvl lvr lvv ra- raa rab rae rag ral rar rau rav rba rbb rbe rbg rbl rbr rbu re- rea reb ree reg rel rer reu rev rga rgb rge rgg rgr rgv rla rle rlg rll rlr rlu rra rrb rrg rrl rrr rru rua rub rue rug rur ruu ruv rva rvb rve rvg rvl rvr rvu rvv ua- uaa uab uae uag ual uar uau uav uba ubb ube ubg ubl ubr ubu ubv uea ueb uee ueg uel uer uga ugb uge ugg ugl ugr ugu ula ulb ule ulg ull ulr ulu ulv ur- ura urb ure urg url urr uru uua uue uug uur uuu uva uvb uve uvl uvu uvv v-a v-e vaa vab vae vag val var vau vav vba vbg vbl vbr vbv vea veb vee veg vel ver veu vga vgg vgl vgr vgu vl- vla vlb vle vll vlv vra vrb vre vrg vrr vru vue vug vul vur vuv vva vvb vvg vvr vvv