-al -ol a-a a-t aaa aaf aal aao aar aat af- afa aff afl afo afr aft al- ala alf all alo alr alt aoa aof aol aoo aor aot ar- ara arf arl aro arr art at- ata atf atl ato atr att faa faf fal fao far fat ffa fff ffl ffo ffr fft fla flf fll flo flr flt foa fof fol foo for fot fra frf frl fro frr frt fta ftf ftl fto ftr ftt la- laa laf lal lao lar lat lfa lff lfl lfo lfr lft lla llf lll llo llr llt loa lof lol loo lor lot lra lrf lro lrr lrt lta ltf ltl lto ltr ltt oaa oaf oal oao oar oat of- ofa off ofl ofo ofr oft ola olf oll olo olt oo- ooa oof ool ooo oor oot or- ora orf orl oro orr ort ot- ota otf otl oto otr ott ra- raa raf ral rao rar rat rfa rff rfl rfo rfr rft rla rlf rll rlo rlr rlt roa rof rol roo ror rot rra rrf rrl rrr rrt rta rtf rtl rto rtr rtt taa taf tal tao tar tat tfa tff tfl tfo tfr tft tla tlf tll tlo tlr tlt to- toa tof tol too tor tot tra trf trl tro trr trt tta ttf ttl tto ttr ttt