a-a a-i aaa aai aar aas aax aay ai- aia aii air ais aix aiy ar- ara ari arr ars arx ary as- asa asi asr ass asx asy ax- axa axi axr axs axx ay- aya ayi ayr ays ayx ia- iaa iai iar ias iia iii iir iis iix ir- ira iri irr irs irx iry is- isa isi isr iss isy ixi ixy iya iyr iys iyy ra- raa rai rar ras rax ray ria rii rir ris rix riy rra rri rrr rrs rsa rsi rsr rss rsx rxr rxs ry- rya ryr rys ryy saa sai sar sas sax say sia sii sir sis six sr- sra sri srr srs srx sry ss- ssa ssi ssr sss ssx sxi sxs sy- sya syi syr sys syx xaa xar xas xia xii xis xix xrx xry xsa xsi xss xxi xxx xxy xyr xyy yaa yai yar yas yax yay yii yir yis yra yrs ysa ysi ysr yss ysy yxa yxy yys yyy