-al -ol a-a aaa aaf aal aao aar aau af- afa aff afl afo afr afu al- ala alf all alo alr alu aoa aof aol aoo aor aou ar- ara arf arl aro arr aru au- aua auf aul auo aur faa faf fal fao far fau ffa fff ffl ffo ffr ffu fla flf fll flo flr flu foa fof fol foo for fou fra frf frl fro frr fru fua fuf ful fuo fur fuu la- laa laf lal lao lar lau lfa lff lfl lfo lfr lfu lla llf lll llo llr llu loa lof lol loo lor lou lra lrf lro lrr lru lua luf lul luo lur luu oaa oaf oal oao oar oau of- ofa off ofl ofo ofr ofu ola olf oll olo olu oo- ooa oof ool ooo oor or- ora orf orl oro orr oru ou- oua ouf oul ouo our ra- raa raf ral rao rar rau rfa rff rfl rfo rfr rfu rla rlf rll rlo rlr rlu roa rof rol roo ror rou rra rrf rrl rrr rru rua ruf ruo rur ruu ua- uaa uaf ual uao uar uau ufa uff ufl ufo ufr ufu ula ulf ull ulo ulr ulu uoa uol uoo uor ur- ura urf url uro urr uru uua uur uuu