iii iin iio iip iir iis iit iix in- ini inn ino inp inr ins int inx iny io- ioi ion ioo iop ior ios iot ipi ipn ipo ipp ipr ips ipt ipx ipy ir- iri irn iro irp irr irs irt irx iry is- isi isn iso isp isr iss ist isy iti itn ito itp its itt itx ity ixi ixn ixy iyo iyr iys iyt iyy n-i nii nin nio nip nir nis nit nix nni nnn nno nnp nns nnt no- noi non noo nop nor nos not nox noy npi npn npo npp npr nps npt nri nrn nro nrp nrr nrs nrt nrx nry nsi nsn nso nsp nsr nss nst nsx nsy nti ntn nto ntp ntr nts ntt ntx nxt nyn nyo nyp nys nyt nyx nyy o-i oii oin oio oip oir ois oit on- oni onn ono onp onr ons ont onx ony oo- ooi oon ooo oop oor oos oot oox op- opi opn opo opp opr ops opt opx opy or- ori orn oro orp orr ors ort orx ory os- osi osn oso osp osr oss ost osx ot- oti otn oto otp otr ots ott ox- oxi oxn oxo oxt oxx oxy oyi oyo oys p-p pii pin pio pip pir pis pit pix pn- pni pnn pno pnp pnr pns pnt pnx pny poi pon poo pop por pos pot pox poy ppi ppn ppo ppp ppr pps ppt ppx pri prn pro prp prr prs prt prx pry ps- psi psn pso psp psr pss pst psx psy pt- pti ptn pto ptp ptr pts ptt ptx pty pxr pxs pxt py- pyn pyo pyr pys pyt pyx rii rin rio rip rir ris rit rix riy rni rnn rno rnp rnr rns rnt rny roi ron roo rop ror ros rot rox roy rpi rpn rpo rpp rpr rps rpt rpx rri rrn rrp rrr rrs rrt rsi rsn rso rsp rsr rss rst rsx rti rtn rto rtp rtr rts rtt rtx rty rxp rxr rxs ry- ryn ryo ryr rys ryy sii sin sio sip sir sis sit six sni snn sno snp snr sns snt sny soi son soo sop sor sos sot sox soy spi spn spo spp spr sps spt spx spy sr- sri srn sro srp srr srs srt srx sry ss- ssi ssn sso ssp ssr sss sst ssx sti stn sto stp str sts stt stx sty sxi sxn sxs sxt sy- syi syn syp syr sys syt syx t-x tii tin tio tip tir tis tit tix tiy tni tnn tno tnp tnr tns tnt tnx to- toi ton too top tor tos tot tox toy tpi tpn tpo tpp tpr tps tpt tpx tri trn tro trp trr trs trt trx try tsi tsn tso tsp tsr tss tst tsx tsy tti ttn tto ttp ttr tts ttt ttx tty txi txn txs txt tyn tyo typ tyr tys tyt xii xin xio xis xit xix xno xns xoi xon xoo xop xor xos xot xox xpn xpo xpp xps xpt xrt xrx xry xsi xsp xss xst xti xtp xtr xts xtx xty xxi xxo xxp xxx xxy xyp xyr xyy yii yin yio yip yir yis yit ynn ynp yns yny yoi yon yoo yop yor yos yot yox yoy ypo yps yrn yro yrp yrs yrt ysi yso ysp ysr yss yst ysy ytn yto ytp ytr yts ytt yxy yys yyt yyy