-al -er a-a a-b a-i aaa aab aae aaf aai aal aar aav ab- aba abb abe abf abi abl abr abv aea aeb aee aef aei ael aer aev af- afa afb afe aff afi afl afr afv ai- aia aib aie aif aii ail air aiv al- ala alb ale alf ali all alr alv ar- ara arb are arf ari arl arr arv av- ava avb ave avf avi avl avr baa bab bae baf bai bal bar bav bba bbb bbe bbf bbi bbl bbr be- bea beb bee bef bei bel ber bev bfa bfb bfe bff bfi bfl bfr bfv bi- bia bib bie bif bii bil bir biv bla blb ble blf bli bll blr blv bra brb bre brf bri brl brr brv bva bvb bve bvi bvl bvr bvv eaa eab eae eaf eai eal ear eav eba ebb ebe ebf ebi ebl ebr ebv eea eeb eee eef eel eer eev ef- efa efb efe eff efi efl efr eia eib eie eif eii eil eir eiv ela elb ele elf eli ell elr elv era erb ere erf eri erl err erv eva evb eve evf evi evl evr evv faa fab fae faf fai fal far fav fba fbb fbe fbf fbi fbl fbr fea feb fee fef fei fel fer fev ffa ffe fff ffi ffl ffr ffv fia fib fie fif fii fil fir fla flb fle flf fli fll flr fra frb fre frf fri frl frr fva i-f i-v ia- iaa iab iae iaf iai ial iar iav iba ibb ibe ibf ibi ibl ibr ibv ie- iea iee ief iei iel ier iev ifa ifb ife iff ifi ifl ifr iia iib iie iif iii iil iir il- ila ilb ile ilf ili ill ilr ilv ir- ira irb ire irf iri irl irr irv iva ivb ive ivf ivi ivl ivr ivv la- laa lab lae laf lai lal lar lav lba lbb lbe lbf lbi lbl lbr lbv lea leb lee lef lei lel ler lev lfa lfb lfe lff lfi lfl lfr lia lib lie lif lii lil lir liv lla llb lle llf lli lll llr llv lra lrb lrf lri lrr lrv lva lvb lve lvf lvi lvl lvr lvv ra- raa rab rae raf rai ral rar rav rba rbb rbe rbf rbi rbl rbr re- rea reb ree ref rei rel rer rev rfa rfb rfe rff rfi rfl rfr rfv ria rib rie rif rii ril rir riv rla rle rlf rli rll rlr rra rrb rrf rri rrl rrr rva rvb rve rvf rvi rvl rvr rvv v-a v-e vaa vab vae vai val var vav vba vbi vbl vbr vbv vea veb vee vef vei vel ver vfa vfb vff vfi vfl vfr vfv vi- via vib vie vif vii vil vir viv vl- vla vlb vle vlf vll vlv vra vrb vre vrf vri vrr vva vvb vvi vvr vvv