-th h-i hhh hhi hho hhp hhs hht hhy hih hii hio hip his hit hix hoh hoi hoo hop hos hot hox hoy hph hpi hpo hpp hps hpt hpy hsh hsi hsp hss hst hsx hsy hth hti hto htp hts htt htx hty hy- hyh hyi hyo hyp hys hyt hyy ihh ihi iho ihp ihs iht ihy iih iii iio iip iis iit iix io- ioh ioi ioo iop ios iot ipi ipo ipp ips ipt ipx ipy is- ish isi iso isp iss ist isy ith iti ito itp its itt itx ity ixi ixy iyo iys iyt iyy o-i ohh ohi oho ohp ohs oht oii oio oip ois oit oo- ooh ooi ooo oop oos oot oox op- oph opi opo opp ops opt opx opy os- osh osi oso osp oss ost osx ot- oth oti oto otp ots ott ox- oxi oxo oxt oxx oxy oyi oyo oys p-p phi pho php phs pht phx phy pih pii pio pip pis pit pix poh poi poo pop pos pot pox poy pph ppi ppo ppp pps ppt ppx ps- psh psi pso psp pss pst psx psy pt- pth pti pto ptp pts ptt ptx pty pxs pxt py- pyo pys pyt pyx sh- shh shi sho shp shs sht shy sih sii sio sip sis sit six soh soi soo sop sos sot sox soy sph spi spo spp sps spt spx spy ss- ssh ssi sso ssp sss sst ssx sth sti sto stp sts stt stx sty sxi sxs sxt sy- syh syi syp sys syt syx t-x th- thh thi tho thp ths tht thx thy tih tii tio tip tis tit tix tiy to- toh toi too top tos tot tox toy tph tpi tpo tpp tps tpt tpx tsh tsi tso tsp tss tst tsx tsy tth tti tto ttp tts ttt ttx tty txi txs txt tyo typ tys tyt xhp xht xii xio xis xit xix xoi xoo xop xos xot xox xpo xpp xps xpt xsi xsp xss xst xti xtp xts xtx xty xxi xxo xxp xxx xxy xyp xyy yhi yhs yht yih yii yio yip yis yit yoi yoo yop yos yot yox yoy ypo yps ysi yso ysp yss yst ysy yth yto ytp yts ytt yxy yys yyt yyy