a-fu a-ii aaaa aaaf aaai aaas aafa aaff aafi aaii aais aasa aasf aasi aass aasu aaus afaa affa affi affs afgf afia afif afig afis afsa afua afus agag agai agas agau agfa agga aggi aggu agia agig agii agis agsa agsg agsu agua agui agus aiai aias aiff aifs aiga aiia aisa aisg aisi aiui asaa asaf asag asai asas asau asfa asfi asia asif asii asis assa assi asss assu asui asus auaa aufi aufs auga augi augs auis ausa ausu auug faaa faas fafa faff fafg fafi fagg fagi fags fagu fais fasa fasi fass ffff ffii ffsa ffss fiaa fiaf fias fifa fiff fifi figa figg figs fiii fisa fisi fiss fisu fiua fsai fsas fsfi fsgs fsia fssa fssf fuff fufu fuga fugi fugs fugu fuig fusa fusi fuss fusu gaas gafa gaff gafi gaga gagg gagi gags gagu gaia gaig gais gaiu gasa gasi gass gaua gaus gffa ggfg gggg ggss giaa giai gias giff gifs gifu giga gigg gigi gigs giis gisa giss gius gsif gsis guaa guag gufa guff guga gugg gugi gugu guia guis gusa guss guus iaaa iaai iaas iaff iags iaia iais iasa iasi ifaa ifas ifis ifsa igas igfa igga iggs igia igis igua igus iias iifa iiii iiis iisi iisu is-a isaf isai isas isfa isia isis issa issf issi isss issu isua isus iugs iuiu iuss s-ii saaf saag saas safa saff safi safu saga sagg sagi sags sagu saia saif sais sasa sasf sasi sass saua sauf saus sfas sfia sfss sfsu sgaa sgau sggg sggs sgss siaa siaf siag siai sias siau sifa siff sifu siga sigg sigi sigs sisa sisi siss sisu siui sius ssaa ssas ssau ssgs ssis sssa sssf sssi ssss suas suf- sufa suff sufi sufs sufu sug- suga sugg sugi suig suis sus- susa susi suss susu suus uafa uasa uaua ufag uffa uggs ugia ugis uguu us-a usaa usaf usag usas usfa usfi usfs usga usia usif usis ussa ussf usss ussu usua usui usus uusi uuuu