pog poh poi pok pon poo pop por pos ppc ppe ppg pph ppi ppk ppn ppo ppp ppr pps prc pre prg prh pri prk prn pro prp prr prs ps- psc pse psg psh psi psk psn pso psp psr pss rcc rce rcg rch rci rcn rco rcp rcr rcs re- rec ree reg reh rei rek ren reo rep rer res rgc rge rgg rgh rgi rgk rgn rgo rgp rgr rgs rh- rhc rhe rhg rhh rhi rhn rho rhp rhr rhs ric rie rig rih rii rik rin rio rip rir ris rkc rke rkg rkk rko rkp rks rnc rng rnh rni rnn rno rnp rnr rns roc roe rog roh roi rok ron roo rop ror ros rpc rpe rpg rph rpi rpk rpn rpo rpp rpr rps rrc rrg rrh rri rrk rrn rrp rrr rrs rsc rse rsg rsh rsi rsk rsn rso rsp rsr rss scc sce scg sch sci sck scn sco scp scr scs se- sec see seg seh sei sek sen seo sep ser ses sgc sge sgg sgh sgi sgk sgn sgo sgp sgr sgs sh- shc she shg shh shi shk shn sho shp shr shs sic sie sig sih sii sik sin sio sip sir sis sk- skc ske skg skh ski skk sko skp skr sks snc sne sng sni snk snn sno snp snr sns soc soe sog soh soi sok son soo sop sor sos spc spe spg sph spi spk spn spo spp spr sps sr- src sre srg srh sri srk srn sro srp srr srs ss- ssc sse ssg ssh ssi ssk ssn sso ssp ssr sss