a-a a-b aaa aab aao aar aas aau aav ab- aba abb abo abr abs abu abv aoa aob aoo aor aos aou aov ar- ara arb aro arr ars aru arv as- asa asb aso asr ass asu asv au- aua aub auo aur aus auv av- ava avb avo avr avs avu b-u baa bab bao bar bas bau bav bba bbb bbo bbr bbs bbu boa bob boo bor bos bou bov bra brb bro brr brs bru brv bsa bsb bso bsr bss bsu bsv bua bub buo bur bus buu bva bvb bvo bvr bvs bvu bvv oaa oab oao oar oas oau oav ob- oba obb obo obr obs obu obv oo- ooa oob ooo oor oos oov or- ora orb oro orr ors oru orv os- osa osb oso osr oss osu osv ou- oua ouo our ous ov- ova ovb ovo ovs ovv ra- raa rab rao rar ras rau rav rba rbb rbo rbr rbs rbu roa rob roo ror ros rou rov rra rrb rrr rrs rru rsa rsb rso rsr rss rsu rsv rua rub ruo rur rus ruu ruv rva rvb rvo rvr rvs rvu rvv saa sab sao sar sas sau sav sba sbb sbo sbr sbs sbu sbv soa sob soo sor sos sou sov sr- sra srb sro srr srs srv ss- ssa ssb sso ssr sss ssu ssv sua sub suo sur sus suu suv sva svb svo svr svs svu svv ua- uaa uab uao uar uas uau uav uba ubb ubo ubr ubs ubu ubv uoa uob uoo uor uos ur- ura urb uro urr urs uru usa usb uso usr uss usu usv uua uur uus uuu uva uvb uvo uvs uvu uvv v-a vaa vab vao var vas vau vav vba vbo vbr vbs vbv voa vob voo vor vos vou vov vra vrb vrr vrs vru vsa vsb vso vsr vss vsu vsv vur vus vuv vva vvb vvo vvr vvs vvv

-ous aaaa aaab aaar aaas aaav aaba aabb aaoo aara aaro aars aaru aasa aass aasu aaus aava abaa abab abar abas abau abb- abba abbb abbo abbr abbs aboa abob aboo abor abos abou abov abra abro abrs abs- absa abss absu abua abus abva aoba aora aorb aors aoss aous arab arar aras arau arba arbs aroa arob aroo aror aros arr- arra arro arrr arrs arru ars- arsa arso arsu arua arub arva arvo asaa asab asao asar asas asau asba asbo asbu asob asor asos asou asra asro asrs asru assa asso assr asss assu asub asur asus asva asvs auaa aur- aura auro ausa ausu auvs avab avao avar avas avor avos avou avra avro avur avus avva avvo baaa baar baas baba babb babo babr babs babu baos bar- bara barb baro barr bars baru basa baso bass basu bau- baur bava bavu bbas bbau bbbb bbbs boab boar boas boba bobb bobo bobs bobu boob boor boos bor- bora boro borr bors boru bosa boso boss bosu boua bour bous bova bovo brab brao bras brau brav broa brob broo bror bros brou brrr brrs brsb brsr brus bruv bsaa bsas bsos bsra buar buba bubb bubo bubs bubu bur- bura burb buro burr burs buru busa buss busu buus oaau oara oars oass oavs obas obba obbo obor obos obra obro obsr obss obus obvs ooaa ooba oooo ooos oora oosa oous orab orao orar oras orav orba orbb orbo orbs orbu oro- oror oros orra orro orrs orsa orso orsu orub orus orvr orvs osar osas osba osoo osor osos osov osro ossa ossb osso ossu oubs our- oura ouro ours ousa ouu- ovar ovo- ovoo ovra raab raas raba rabb rabo rabs rabu raob raos rara rarb raro rars rasa raso rass rasu raua raub raus rava rbbb rbbr rbbs rbss roab roar roas rob- roba robb robo robs robu roob roor roos rora roro roru rosa roso ross roua roub rous rova rovo rovs rras rrrr rsaa rsos rssa rsua ruas ruba rubb rubs rubu rura ruro rurs ruru rusa ruso russ rusu ruvu s-os saab saar saas saba sabb sabo sabr sabs sabu saor saos saou sara saro sarr sars saru sarv sasa saso sass saua saur saus sava savo savs savu sbaa sbar sbas sbbs sbor sbsa sbus soar soas soba sobo sobr sobs sobu soor soos sora sorb soro sorr sors soru sosa soso soss sosv sour sous sova sovo sovs sovu sras sros srub ssaa ssab ssao ssas ssau ssbr ssra ssrs sssa sssb ssss suar suas sub- suba subb subo subs suor suos sur- sura suro surr surs suru surv sus- susa suso suss susu suus suva suvs svar svor uars uaru uasa uaua uavs ubar ubba ubbo ubos ubra uor- uovo urao uras urau urba urbs uro- uroa uroo urra ursa urso urss ursu urur urus urva us-a usaa usar usas usba usbr usbs usos usov usra ussa ussb ussr usss ussu usua usus uuuu uv-a uv-b uvaa uvas uvvu vaar vaas vabs vara varr vars varu vas- vasa vaso vass vasu vaus vava vavs voar voor vor- vora voro vors voru vosa voso voss vosu vour vous vras vrav vrba vrsa vurb vvob vvsb vvvv

-aaa- a-vsb aaaas aaasa aaass aabaa aabba aabra aarau aasra abaab ababa ababs ababu abara abaru abasa abass abava abbar abbas abbos abbou abbrs abbur aboab abobo abora aboso abous abovo abrar abras abrus absar abura aburr aoos aorus ar-ab arab- araba arabo arabs arara arars araru arass arasu arava aravu arbab arbar arbas arbor arbos arbus aroab aroar aroba aroor aroos arora arosa arras arrau arros arrou arrua arsos arsov aruaa aruba arura aruru arus- arusa aruvu arvar arvas arvos asaba asara asaro asasa asava asbos asbro asbru asoar asors asosa asour asrar asror assab assas assoa assos assur asubs asura asvab auass aubas aurar auras auro- auroa auror auros aurra aurva ausar ausra aussa avara avaro avars avour avous avouu avros avsa