-ic a-a a-c a-i a-t aaa aac aai aao aas aat aax aay ac- aca acc aci aco acs act acx acy ai- aia aic aii aio ais ait aix aiy aoa aoc aoi aoo aos aot aox as- asa asc asi aso ass ast asx asy at- ata atc ati ato ats att atx ax- axa axi axo axs axt axx ay- aya ayc ayi ayo ays ayt ayx c-- caa cac cai cao cas cat cax cay cca ccc cci cco ccs cct ccx ci- cia cic cii cio cis cit cix co- coa coc coi coo cos cot cox coy csa csc csi cso css cst csx csy cta ctc cti cto cts ctt ctx cty cxc cxi cxo cxs cxt cxx cya cyc cyo cys cyt ia- iaa iac iai iao ias iat ica icc ici ico ics ict icy iia iic iii iio iis iit iix io- ioa ioc ioi ioo ios iot is- isa isc isi iso iss ist isy ita itc iti ito its itt itx ity ixc ixi ixy iya iyc iyo iys iyt iyy o-i oaa oac oai oao oas oat oax oc- oca occ oci oco ocs oct ocx oia oic oii oio ois oit oo- ooa ooc ooi ooo oos oot oox os- osa osc osi oso oss ost osx ot- ota otc oti oto ots ott ox- oxa oxc oxi oxo oxt oxx oxy oya oyi oyo oys saa sac sai sao sas sat sax say sca scc sci sco scs sct scx sia sic sii sio sis sit six soa soc soi soo sos sot sox soy ss- ssa ssc ssi sso sss sst ssx sta stc sti sto sts stt stx sty sxc sxi sxs sxt sy- sya syc syi sys syt syx t-x taa tac tai tao tas tat tax tay tca tcc tci tco tcs tct tcx tia tic tii tio tis tit tix tiy to- toa toc toi too tos tot tox toy tsa tsc tsi tso tss tst tsx tsy tta ttc tti tto tts ttt ttx tty txi txs txt tya tyc tyo tys tyt xaa xac xas xat xci xcx xia xic xii xio xis xit xix xoa xoc xoi xoo xos xot xox xsa xsc xsi xss xst xtc xti xts xtx xty xxi xxo xxx xxy xyy yaa yac yai yao yas yat yax yay yca ycc yci yco ycs ycy yii yio yis yit yoc yoi yoo yos yot yox yoy ysa ysc ysi yso yss yst ysy yta ytc yto yts ytt yxa yxy yyc yys yyt yyy