spi spn spo spp spr sps spt spz sr- sra srd sre sri srn sro srp srr srs srt ss- ssa ssd sse ssi ssn sso ssp ssr sss sst ssz sta std ste sti stn sto stp str sts stt stz sza szd sze szi szp szr taa tad tae tai tan tao tap tar tas tat taz tda tdd tde tdi tdn tdo tdp tdr tds tdt te- tea ted tee tei ten teo tep ter tes tet tez tia tid tie tii tin tio tip tir tis tit tiz tna tnd tne tni tnn tno tnp tnr tns tnt tnz to- toa tod toe toi ton too top tor tos tot toz tpa tpd tpe tpi tpn tpo tpp tpr tps tpt tpz tra trd tre tri trn tro trp trr trs trt trz tsa tsd tse tsi tsn tso tsp tsr tss tst tta ttd tte tti ttn tto ttp ttr tts ttt tza tzd tze tzs zaa zad zai zan zao zap zar zas zat zaz zds zdt zea zed zee zen zeo zep zer zes zet zez zia zid zie zin zio zip zir zis zit ziz znd zne znn zno znp zns zo- zoa zod zoe zoi zon zoo zor zos zot zpe zpi zpo zpp zpr zpt zro zrp zrs zsa zse zsi zst zsz zta zte ztr zzr zzs zzt zzz