-al a-a a-b a-i a-t aaa aab aaf aai aal aat ab- aba abb abf abi abl abt af- afa afb aff afi afl aft ai- aia aib aif aii ail ait al- ala alb alf ali all alt at- ata atb atf ati atl att baa bab baf bai bal bat bba bbb bbf bbi bbl bbt bfa bfb bff bfi bfl bft bi- bia bib bif bii bil bit bla blb blf bli bll blt bta btb btf bti btl btt faa fab faf fai fal fat fba fbb fbf fbi fbl fbt ffa fff ffi ffl fft fia fib fif fii fil fit fla flb flf fli fll flt fta ftb ftf fti ftl ftt i-f ia- iaa iab iaf iai ial iat iba ibb ibf ibi ibl ibt ifa ifb iff ifi ifl ift iia iib iif iii iil iit il- ila ilb ilf ili ill ilt ita itb itf iti itl itt la- laa lab laf lai lal lat lba lbb lbf lbi lbl lbt lfa lfb lff lfi lfl lft lia lib lif lii lil lit lla llb llf lli lll llt lta ltb ltf lti ltl ltt taa tab taf tai tal tat tba tbb tbf tbi tbl tbt tfa tfb tff tfi tfl tft tia tib tif tii til tit tla tlf tli tll tlt tta ttb ttf tti ttl ttt