a-a a-i aaa aad aai aao aap aas aax ad- ada add adi ado adp ads adx ai- aia aid aii aio aip ais aix aoa aod aoi aoo aop aos aox ap- apa apd api apo app aps apx as- asa asd asi aso asp ass asx ax- axa axi axo axp axs axx daa dad dai dao dap das dax dda ddd ddi ddo ddp dds ddx di- dia did dii dio dip dis dix doa dod doi doo dop dos dox dpa dpd dpi dpo dpp dps dsa dsd dsi dso dsp dss dsx dxd dxi dxo dxp dxs dxx i-d ia- iaa iad iai iao iap ias ida idd idi ido idp ids idx iia iid iii iio iip iis iix io- ioa iod ioi ioo iop ios ipa ipd ipi ipo ipp ips ipx is- isa isd isi iso isp iss ixi o-i oaa oad oai oao oap oas oax oda odd odi odo odp ods oia oid oii oio oip ois oo- ooa ood ooi ooo oop oos oox op- opa opd opi opo opp ops opx os- osa osd osi oso osp oss osx ox- oxa oxi oxo oxx p-p paa pad pai pao pap pas pax pda pdd pdi pdo pdp pds pdx pia pid pii pio pip pis pix poa pod poi poo pop pos pox ppa ppd ppi ppo ppp pps ppx ps- psa psd psi pso psp pss psx pxs saa sad sai sao sap sas sax sda sdd sdi sdo sdp sds sia sid sii sio sip sis six soa sod soi soo sop sos sox spa spd spi spo spp sps spx ss- ssa ssd ssi sso ssp sss ssx sxi sxs xaa xad xap xas xda xdi xds xia xii xio xis xix xoa xod xoi xoo xop xos xox xpa xpd xpo xpp xps xsa xsi xsp xss xxi xxo xxp xxx