a-a a-b a-i a-t aaa aab aaf aai aao aar aat aav ab- aba abb abf abi abo abr abt abv af- afa afb aff afi afo afr aft afv ai- aia aib aif aii aio air ait aiv aoa aob aof aoi aoo aor aot aov ar- ara arb arf ari aro arr art arv at- ata atb atf ati ato atr att atv av- ava avb avf avi avo avr avt baa bab baf bai bao bar bat bav bba bbb bbf bbi bbo bbr bbt bfa bfb bff bfi bfo bfr bft bfv bi- bia bib bif bii bio bir bit biv boa bob bof boi boo bor bot bov bra brb brf bri bro brr brt brv bta btb btf bti bto btr btt btv bva bvb bvi bvo bvr bvt bvv faa fab faf fai fao far fat fav fba fbb fbf fbi fbo fbr fbt ffa fff ffi ffo ffr fft ffv fia fib fif fii fir fit foa fob fof foi foo for fot fra frb frf fri fro frr frt fta ftb ftf fti fto ftr ftt ftv fva fvt i-f i-v ia- iaa iab iaf iai iao iar iat iav iba ibb ibf ibi ibo ibr ibt ibv ifa ifb iff ifi ifo ifr ift iia iib iif iii iio iir iit io- ioa iob iof ioi ioo ior iot iov ir- ira irb irf iri iro irr irt irv ita itb itf iti ito itt itv iva ivb ivf ivi ivo ivr ivt ivv o-i oaa oab oaf oai oao oar oat oav ob- oba obb obf obi obo obr obt obv of- ofa ofb off ofi ofo ofr oft ofv oia oib oif oii oio oir oit oiv oo- ooa oob oof ooi ooo oor oot oov or- ora orb orf ori oro orr ort orv ot- ota otb otf oti oto otr ott otv ov- ova ovb ovf ovi ovo ovv ra- raa rab raf rai rao rar rat rav rba rbb rbf rbi rbo rbr rbt rfa rfb rff rfi rfo rfr rft rfv ria rib rif rii rio rir rit riv roa rob rof roi roo ror rot rov rra rrb rrf rri rrr rrt rta rtb rtf rti rto rtr rtt rtv rva rvb rvf rvi rvo rvr rvt rvv taa tab taf tai tao tar tat tav tba tbb tbf tbi tbo tbr tbt tbv tfa tfb tff tfi tfo tfr tft tia tib tif tii tio tir tit tiv to- toa tob tof toi too tor tot tov tra trb trf tri tro trr trt trv tta ttb ttf tti tto ttr ttt ttv tva tvb tvf tvi tvo tvr tvt v-a vaa vab vai vao var vat vav vba vbi vbo vbr vbv vfa vfb vff vfi vfr vft vfv vi- via vib vif vii vio vir vit viv voa vob vof voi voo vor vot vov vra vrb vrf vri vrr vrt vta vtb vti vto vtr vtt vtv vva vvb vvi vvo vvr vvt vvv

a-ii a-iv aaaa aaab aaaf aaai aaar aaav aaba aabb aabi aabt aafa aafb aaff aafi aaib aaii aaoo aara aari aaro aart aata aatf aatt aava abaa abab abaf abai abar abat abb- abba abbb abbi abbo abbr abbt abff abia abib abir abit aboa abob abof aboo abor abot abov abra abri abro abta abva afaa afao afar afat affa affi affo afft afia afib afif afir afit afoa afoo afor afr- afra afri afro afta aiai aiba aibo aiff aifv aiia aiib aiir aioi aira airi airo airt aita aitf aiti aitr aitt aiva aoba aora aorb aort aotf arab araf arai arar arat arba arbi arfa arfb arff arft aria arib arif arii ario arit aroa arob aroi aroo aror arr- arra arri arro arrr arrt arta arti arto artr artv arva arvi arvo at-t ataa atab atai atar atat atfb atia atif atit atob atof atoi ator atot atra atri atro atta atti atto attr atvi avab avao avar avat avia avio avit aviv avor avot avra avri avro avva avvo ba-i baaa baaf baar baat baba babb babi babo babr baff bafo baft baia baib baio bair bait bar- bara barb barf bari baro barr bart bata batf bati bato batt bava bavi bbbb bfta bftt biaf biao biar biat biba bibb bibi bibo bifa biff bifi bio- bioi biot bira birb biri biro birr birt bita bito bitt bivi boab boai boar boat boba bobb bobi bobo bofa boff boi- boii boit boob boof boor boot bor- bora borf bori boro borr bort bota botb boti boto bott bova bovi bovo brab braf brai brao brat brav bria brio brit broa brob broo bror brot brrr brvi btaa btaf btob btor btrt bttb btvi faaa faba fabi fabo fafa faff fafi fafo faio fair fait fara farb faro farr fart fata fatf fati fato fatt fava favi fbar ffar ffff ffii ffrr fftf fiaa fiaf fiar fiat fiba fifa fiff fifi fifo fift fiii fior fira fita fiti fitt fivb foaf foar foba fobt fofo foia foof foot for- fora forb fori foro forr fort fota foti foto fott fr-v frab frat fria frib frio frit frob frot frta frvt ftii iaaa iaai iaat iaba iaff iaia iara iart iata iati iava ibar ibat ibfi ibia ibot ibra ibri ibro ibtb ifaa ifao ifar ifat ifbb ifit ifor ifra ifrb ifrf ifri ifta ifto ifva iifa iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi ioii ioio ioit ioof iooi iooo iora iori iota iotf ioto iraf irai irao irar iri- iria irio irob irov irra irri irta irtf irti itaa itaf itai itar itat itfa itia itif itof itoi itoo itor itra itrf itri itta ittf itto ivai ivao ivar ivbv ivor oafo oara obai obba obbo obfv obia obit oboi obor obot obra obri obro obvi off- offa offo offr ofit ofor ofra ofta oiav oiba oiii oira oirt oita oiti ooaa ooba oobi