a-a a-i a-t aaa aad aai aas aat aax ad- ada add adi ads adt adx ai- aia aid aii ais ait aix as- asa asd asi ass ast asx at- ata atd ati ats att atx ax- axa axi axs axt axx daa dad dai das dat dax dda ddd ddi dds ddt ddx di- dia did dii dis dit dix dsa dsd dsi dss dst dsx dta dtd dti dts dtt dtx dxd dxi dxs dxt dxx i-d ia- iaa iad iai ias iat ida idd idi ids idt idx iia iid iii iis iit iix is- isa isd isi iss ist ita itd iti its itt itx ixi saa sad sai sas sat sax sda sdd sdi sds sdt sia sid sii sis sit six ss- ssa ssd ssi sss sst ssx sta std sti sts stt stx sxi sxs sxt t-x taa tad tai tas tat tax tda tdd tdi tds tdt tdx tia tid tii tis tit tix tsa tsd tsi tss tst tsx tta ttd tti tts ttt ttx txi txs txt xaa xad xas xat xda xdi xds xdt xia xii xis xit xix xsa xsi xss xst xti xts xtx xxi xxx