a-a a-i aaa aai aao aar aas aax aay ai- aia aii aio air ais aix aiy aoa aoi aoo aor aos aox ar- ara ari aro arr ars arx ary as- asa asi aso asr ass asx asy ax- axa axi axo axr axs axx ay- aya ayi ayo ayr ays ayx ia- iaa iai iao iar ias iia iii iio iir iis iix io- ioa ioi ioo ior ios ir- ira iri iro irr irs irx iry is- isa isi iso isr iss isy ixi ixy iya iyo iyr iys iyy o-i oaa oai oao oar oas oax oia oii oio oir ois oo- ooa ooi ooo oor oos oox or- ora ori oro orr ors orx ory os- osa osi oso osr oss osx ox- oxa oxi oxo oxx oxy oya oyi oyo oys ra- raa rai rao rar ras rax ray ria rii rio rir ris rix riy roa roi roo ror ros rox roy rra rri rrr rrs rsa rsi rso rsr rss rsx rxr rxs ry- rya ryo ryr rys ryy saa sai sao sar sas sax say sia sii sio sir sis six soa soi soo sor sos sox soy sr- sra sri sro srr srs srx sry ss- ssa ssi sso ssr sss ssx sxi sxs sy- sya syi syr sys syx xaa xar xas xia xii xio xis xix xoa xoi xoo xor xos xox xrx xry xsa xsi xss xxi xxo xxx xxy xyr xyy yaa yai yao yar yas yax yay yii yio yir yis yoi yoo yor yos yox yoy yra yro yrs ysa ysi yso ysr yss ysy yxa yxy yys yyy