aaaa aaaf aaar aaas aaav aafa aaff aaoo aara aaro aars aasa aasf aass aava afaa afao afar affa affo affs afoa afoo afor afr- afra afro afrs afsa afvs aora aors aoss araf arar aras arfa arff arfs aroa aroo aror aros arr- arra arro arrr arrs ars- arsa arso arva arvo asaa asaf asao asar asas asfa asof asor asos asra asro asrs assa asso assr asss asva asvs avao avar avas avor avos avra avro avva avvo faaa faas fafa faff fafo fara faro farr fars fasa faso fass fava favs ffar ffff ffrr ffsa ffss ffvs foaf foar fofo foof foos for- fora foro forr fors fosa foso foss fr-v fras fros frso fsas fsfo fsra fssa fssf oafo oafs oara oars oass oavs ofas off- offa offo offr offs ofor ofra ooaa ooff oofs oooo ooos oora oosa orao orar oras orav orff orfs oro- orof oror oros orra orro orrs orsa orso orvr orvs osaf osar osas osfa osoo osor osos osov osro ossa osso ovar ovo- ovoo ovra raaf raas rafa raff raos rara rarf raro rars rasa raso rass rava roaf roar roas roff rofo roof roor roos rora roro rosa roso ross rova rovo rovs rras rrrr rsaa rsaf rsos rssa s-os saaf saar saas safa saff safo safr saor saos sara sarf saro sarr sars sarv sasa sasf saso sass sava savo savs sfar sfas sfor sfos sfra sfro sfss soar soas sofa sofo soof soor soos sora soro sorr sors sosa soso soss sosv sova sovo sovs sraf sras sros ssaa ssao ssas ssra ssrs sssa sssf ssss svar svor vaar vaas vafa vafs vara varf varr vars vas- vasa vaso vass vava vavs vfor voar voff vofr voor vor- vora voro vors vosa voso voss vras vrav vrsa vsfs vvvv