-al -er a-a a-b a-i aaa aab aae aag aai aal aar aav ab- aba abb abe abg abi abl abr abv aea aeb aee aeg aei ael aer aev ag- aga agb age agg agi agl agr agv ai- aia aib aie aig aii ail air aiv al- ala alb ale alg ali all alr alv ar- ara arb are arg ari arl arr arv av- ava avb ave avg avi avl avr baa bab bae bag bai bal bar bav bba bbb bbe bbg bbi bbl bbr be- bea beb bee beg bei bel ber bev bga bgb bge bgg bgi bgl bgr bgv bi- bia bib bie big bii bil bir biv bla blb ble blg bli bll blr blv bra brb bre brg bri brl brr brv bva bvb bve bvg bvi bvl bvr bvv eaa eab eae eag eai eal ear eav eba ebb ebe ebg ebi ebl ebr ebv eea eeb eee eeg eel eer eev ega egb ege egg egi egl egr eia eib eie eig eii eil eir eiv ela elb ele elg eli ell elr elv era erb ere erg eri erl err erv eva evb eve evg evi evl evr evv gaa gab gae gag gai gal gar gav gba gbe gbg gbi gbl gbr gbv ge- gea geb gee geg gei gel ger gev gga ggb ggg ggi ggr ggv gia gib gie gig gii gil gir giv gla glb gle glg gli gll glr glv gra grb gre grg gri grl grr grv gva gvb gve gvg gvi gvl gvr i-v ia- iaa iab iae iag iai ial iar iav iba ibb ibe ibg ibi ibl ibr ibv ie- iea iee ieg iei iel ier iev iga igb ige igg igi igl igr iia iib iie iii iil iir il- ila ilb ile ilg ili ill ilr ilv ir- ira irb ire irg iri irl irr irv iva ivb ive ivg ivi ivl ivr ivv la- laa lab lae lag lai lal lar lav lba lbb lbe lbg lbi lbl lbr lbv lea leb lee leg lei lel ler lev lga lgb lge lgg lgi lgl lgr lgv lia lib lie lig lii lil lir liv lla llb lle llg lli lll llr llv lra lrb lrg lri lrr lrv lva lvb lve lvg lvi lvl lvr lvv ra- raa rab rae rag rai ral rar rav rba rbb rbe rbg rbi rbl rbr re- rea reb ree reg rei rel rer rev rga rgb rge rgg rgi rgr rgv ria rib rie rig rii ril rir riv rla rle rlg rli rll rlr rra rrb rrg rri rrl rrr rva rvb rve rvg rvi rvl rvr rvv v-a v-e vaa vab vae vag vai val var vav vba vbg vbi vbl vbr vbv vea veb vee veg vei vel ver vga vgg vgl vgr vi- via vib vie vig vii vil vir viv vl- vla vlb vle vll vlv vra vrb vre vrg vri vrr vva vvb vvg vvi vvr vvv