-al -er a-a a-b a-i aaa aab aad aae aaf aai aal aar ab- aba abb abd abe abf abi abl abr ad- ada adb add ade adf adi adl adr aea aeb aed aee aef aei ael aer af- afa afb afd afe aff afi afl afr ai- aia aib aid aie aif aii ail air al- ala alb ald ale alf ali all alr ar- ara arb ard are arf ari arl arr baa bab bad bae baf bai bal bar bba bbb bbd bbe bbf bbi bbl bbr bda bdb bdd bde bdf bdi bdl bdr be- bea beb bed bee bef bei bel ber bfa bfb bfd bfe bff bfi bfl bfr bi- bia bib bid bie bif bii bil bir bla blb bld ble blf bli bll blr bra brb brd bre brf bri brl brr daa dab dad dae daf dai dal dar dba dbb dbd dbe dbf dbi dbl dbr dda ddb ddd dde ddf ddi ddl ddr de- dea deb ded dee def dei del der dfa dfb dfd dfe dff dfi dfl dfr di- dia dib did die dif dii dil dir dl- dla dlb dld dle dlf dli dll dlr dra drb drd dre dri drl drr eaa eab ead eae eaf eai eal ear eba ebb ebd ebe ebf ebi ebl ebr ed- eda edb edd ede edf edi edl edr eea eeb eed eee eef eel eer ef- efa efb efd efe eff efi efl efr eia eib eid eie eif eii eil eir ela elb eld ele elf eli ell elr era erb erd ere erf eri erl err faa fab fad fae faf fai fal far fba fbb fbd fbe fbf fbi fbl fbr fda fdb fdd fde fdf fdi fdl fdr fea feb fed fee fef fei fel fer ffa ffd ffe fff ffi ffl ffr fia fib fid fie fif fii fil fir fla flb fld fle flf fli fll flr fra frb frd fre frf fri frl frr i-d i-f ia- iaa iab iad iae iaf iai ial iar iba ibb ibd ibe ibf ibi ibl ibr ida idb idd ide idf idi idl idr ie- iea ied iee ief iei iel ier ifa ifb ifd ife iff ifi ifl ifr iia iib iid iie iif iii iil iir il- ila ilb ild ile ilf ili ill ilr ir- ira irb ird ire irf iri irl irr la- laa lab lad lae laf lai lal lar lba lbb lbd lbe lbf lbi lbl lbr lda ldb ldd lde ldf ldi ldl ldr lea leb led lee lef lei lel ler lfa lfb lfd lfe lff lfi lfl lfr lia lib lid lie lif lii lil lir lla llb lld lle llf lli lll llr lra lrb lrd lrf lri lrr ra- raa rab rad rae raf rai ral rar rba rbb rbd rbe rbf rbi rbl rbr rda rdb rdd rde rdf rdi rdl rdr re- rea reb red ree ref rei rel rer rfa rfb rfd rfe rff rfi rfl rfr ria rib rid rie rif rii ril rir rla rld rle rlf rli rll rlr rra rrb rrd rrf rri rrl rrr