oie oii oik oil oin oio oip oir ois oit okd oke oki okk okl oko okp okr oks old ole oli olk oll oln olo olp ols olt on- ond one onh oni onk onl onn ono onp onr ons ont oo- ood ooh ooi ook ool oon ooo oop oor oos oot op- opd ope oph opi opk opl opn opo opp opr ops opt or- ord ore orh ori ork orl orn oro orp orr ors ort os- osd ose osh osi osk osl osn oso osp osr oss ost ot- otd ote oth oti otk otl otn oto otp otr ots ott p-p pdd pde pdh pdi pdk pdl pdn pdo pdp pdr pds pdt ped pee peh pei pek pel pen peo pep per pes pet phd phe phi phk phl phn pho php phr phs pht pid pie pih pii pik pil pin pio pip pir pis pit pkd pke pki pkl pkn pko pkp pkr pks pkt pld ple plh pli plk pll pln plo plp plr pls plt pn- pnd pne pnh pni pnk pnl pnn pno pnp pnr pns pnt pod poe poh poi pok pol pon poo pop por pos pot ppd ppe pph ppi ppk ppl ppn ppo ppp ppr pps ppt prd pre prh pri prk prl prn pro prp prr prs prt ps- psd pse psh psi psk psl psn pso psp psr pss pst pt- ptd pte pth pti ptk ptl ptn pto ptp ptr pts ptt rdd rde rdh rdi rdl rdn rdo rdp rdr rds rdt re- red ree reh rei rek rel ren reo rep rer res ret rh- rhd rhe rhh rhi rhl rhn rho rhp rhr rhs rht rid rie rih rii rik ril rin rio rip rir ris rit rke rkk rko rkp rks rkt rld rle rlh rli rll rln rlo rlp rlr rls rlt rnd rnh rni rnn rno rnp rnr rns rnt rod roe roh roi rok rol ron roo rop ror ros rot rpd rpe rph rpi rpk rpl rpn rpo rpp rpr rps rpt rrd rrh rri rrk rrl rrn rrp rrr rrs rrt rsd rse rsh rsi rsk rsl rsn rso rsp rsr rss rst rtd rte rti rtk rtl rtn rto rtp rtr rts rtt sdd sde sdh sdi sdk sdl sdn sdo sdp sdr sds sdt se- sed see seh sei sek sel sen seo sep ser ses set sh- shd she shh shi shk shl shn sho shp shr shs sht sid sie sih sii sik sil sin sio sip sir sis sit sk- skd ske skh ski skk skl sko skp skr sks skt sld sle slh sli slk sll sln slo slp slr sls slt snd sne sni snk snl snn sno snp snr sns snt sod soe soh soi sok sol son soo sop sor sos sot spd spe sph spi spk spl spn spo spp spr sps spt sr- srd sre srh sri srk srl srn sro srp srr srs srt ss- ssd sse ssh ssi ssk ssl ssn sso ssp ssr sss sst std ste sth sti stk stl stn sto stp str sts stt tdd tde tdh tdi tdk tdl tdn tdo tdp tdr tds tdt te- ted tee teh tei tek tel ten teo tep ter tes tet th- thd the thh thi thk thl thn tho thp thr ths tht tid tie tih tii tik til tin tio tip tir tis tit tke tkk tkl tko tkp tkr tks tkt tld tle tlh tli tlk tll tln tlo tlp tlr tls tlt tnd tne tnh tni tnk tnl tnn tno tnp tnr tns tnt to- tod toe toh toi tok tol ton too top tor tos tot tpd tpe tph tpi tpk tpl tpn tpo tpp tpr tps tpt trd tre trh tri trk trl trn tro trp trr trs trt tsd tse tsh tsi tsk tsl tsn tso tsp tsr tss tst ttd tte tth tti ttk ttl ttn tto ttp ttr tts ttt