a-a a-i aaa aah aai aas aax aha ahh ahi ahs ahx ai- aia aih aii ais aix as- asa ash asi ass asx ax- axa axh axi axs axx h-i haa hah hai has hax hha hhh hhi hhs hia hih hii his hix hsa hsh hsi hss hsx ia- iaa iah iai ias iha ihh ihi ihs iia iih iii iis iix is- isa ish isi iss ixi saa sah sai sas sax sh- sha shh shi shs sia sih sii sis six ss- ssa ssh ssi sss ssx sxi sxs xaa xas xia xii xis xix xsa xsi xss xxi xxx