a-a a-b a-i aaa aab aai aao aar aau aax ab- aba abb abi abo abr abu abx ai- aia aib aii aio air aiu aix aoa aob aoi aoo aor aou aox ar- ara arb ari aro arr aru arx au- aua aub aui auo aur aux ax- axa axi axo axr axx b-u baa bab bai bao bar bau bax bba bbb bbi bbo bbr bbu bbx bi- bia bib bii bio bir biu bix boa bob boi boo bor bou box bra brb bri bro brr bru brx bua bub bui buo bur buu bux bxb bxi bxo bxx ia- iaa iab iai iao iar iau iba ibb ibi ibo ibr ibu ibx iia iib iii iio iir iiu iix io- ioa iob ioi ioo ior iou ir- ira irb iri iro irr iru irx iu- iua iub iui iur ixi o-i oaa oab oai oao oar oau oax ob- oba obb obi obo obr obu obx oia oib oii oio oir oiu oo- ooa oob ooi ooo oor oox or- ora orb ori oro orr oru orx ou- oua oui ouo our ox- oxa oxb oxi oxo oxx ra- raa rab rai rao rar rau rax rba rbb rbi rbo rbr rbu rbx ria rib rii rio rir rix roa rob roi roo ror rou rox rra rrb rri rrr rru rua rub rui ruo rur ruu rux rxr ua- uaa uab uai uao uar uau uba ubb ubi ubo ubr ubu ubx uia uib uii uio uir uiu uoa uob uoo uor uox ur- ura urb uri uro urr uru urx uua uur uuu uxb uxo uxr uxu xaa xar xau xbr xbx xia xii xio xiu xix xoa xoi xoo xor xox xrx xui xxi xxo xxx

a-ii aaaa aaab aaai aaar aaba aabb aabi aaib aaii aaoo aara aari aaro aaru abaa abab abai abar abau abax abb- abba abbb abbi abbo abbr abia abib abir abiu aboa abob aboo abor abou abox abra abri abro abua aiai aiba aibo aiia aiib aiir aioi aira airi airo airx aiui aixa aixi aoba aora aorb arab arai arar arau arax arba arbi aria arib arii ario aroa arob aroi aroo aror arr- arra arri arro arrr arru arua arub arui auaa aur- aura auri auro auxa axar axi- axia axo- axoa axxo ba-i ba-x baaa baar baba babb babi babo babr babu baia baib baio bair baix bar- bara barb bari baro barr baru barx bau- baur baux baxi bbau bbbb bbox biao biar biba bibb bibi bibo bio- bioi biou biox bira birb biri biro birr biru birx bixa bixi boab boai boar boba bobb bobi bobo bobu boi- boii boiu boob boor boox bor- bora bori boro borr boru boua bour boxa brab brai brao brau brax bria brio brix broa brob broo bror brou brox brrr brux buar buba bubb bubi bubo bubu buir buiu buix bur- bura burb buri buro burr buru buxa iaaa iaai iaba iaia iara iaru ibar ibia ibox ibra ibri ibro iiii iiio iioi iioo iira ioba iobi ioii ioio iooi iooo iora iori irai irao irar iri- iria irio irix irob irra irri iuiu iura ixia ixxi oaau oara obai obba obbo obia obix oboi obor obox obra obri obro oiba oiii oira ooaa ooba oobi ooia oooo oora orab orai orao orar orba orbb orbi orbo orbu ori- oria orio orix oro- oror orra orri orro orub ouii ouir our- oura ouro ouu- oxa- oxi- oxia oxo- oxox oxxo raab raba rabb rabi rabo rabu raia raii rair raiu raix raob rara rarb rari raro raua raub raxa raxi rbbb rbbr riaa riab riai riau rib- riba ribo ribu riia riou riri rixo roab roar rob- roba robb robi robo robu roia roio roir roiu roob rooi roor roox rora rori roro roru roua roub roux roxa roxo rrrr ruba rubb rubi rubu rura ruri ruro ruru uair uaru uaua ubar ubba ubbi ubbo ubii ubir ubra uira uirr uor- urai urao urau urba urbi uria urib uriu urix uro- uroa uroo urox urra urri urur uuri uuuu uxia uxor xaar xara xaui xbai xbar xbox xbra xiao xibo xibu xiii xixi xoro xoxo xura xuri xuxa xuxu xxii xxix xxxi xxxo xxxx

-aaa- a-box a-iii aaaai aabaa aabba aabra aaiib aarau aaria abaab ababa ababu abaia abair abara abari abaru abbai abbar abbia abbou abbur abio- abira aboab abobo abora abrar abura aburi aburr aiaia aibar aiboa airai airba airor aiura ar-ab arab- araba arabi arabo araia arara arari araru araux araxa arbab arbar arbia arbib arbir arbor ariab aribo arioi aroab aroar aroba aroor arora arrai arrau arria arrou arrua aruaa aruba arura aruru auaxa aurai aurar auri- auria auro- auroa auror aurox aurra auxo- axixa axura baari babai babar babau babax babia babio baboo babou babra babur bai-u baiao baiba baira bairo bairu baori baoro bar-x baraa barab barai barao barar barba barbi barbu bari- baria bario baro- baroa baroi baroo baror barra barri barro barru barua baubo baura bauru bbiab biara biari bibar bibbo bibia bibio bibra bibri birao birar birba birou birur bixio bo-bo boaro bobar bobbi bobr bobri boiai boiar boiro booba boora booru borai borau borax borba borbo boria borio boro- boroa boroo borou borox borra borro bouar bouba bouix boura bouri braai braux briar briou brixx brobo brora broxa brrar brrrr bruiu bruri bruxa buari bubba buoux buraa burao buria burio buroo burra burri burro burru buxar buxia iaaou ibaba ibara ibbur ibiai ibibo ibora iboxx ibrox iiiii iobox ioooi ioooo iorio iouua irabu iraia irara iriba irobo irori irour irura ixora o-r-b oaror obaba obara obiba obira obora oboro obrab oibab ooioo ooooo oraba orabi oraio orara orari orbix oriab oribi orixa orobo oroix oroua oroux orria oruro ouara ouir- ouoro ourax ourba ouria oxoia oxxio ra-ra raaba raaor rabab rabai rabba rabbi rabia rabiu rabor rabou rabri raoui raxar riaba ribar ribbi ribo- ribxi rioux rioxa riria rixoi ro-ro roaix robab robai robar robbi