pnk pnl pnn pno pnp pnr pns pod poe pog poi pok pol pon poo pop por pos ppd ppe ppg ppi ppk ppl ppn ppo ppp ppr pps prd pre prg pri prk prl prn pro prp prr prs ps- psd pse psg psi psk psl psn pso psp psr pss rdd rde rdg rdi rdl rdn rdo rdp rdr rds re- red ree reg rei rek rel ren reo rep rer res rgd rge rgg rgi rgk rgn rgo rgp rgr rgs rid rie rig rii rik ril rin rio rip rir ris rke rkg rkk rko rkp rks rld rle rlg rli rll rln rlo rlp rlr rls rnd rng rni rnn rno rnp rnr rns rod roe rog roi rok rol ron roo rop ror ros rpd rpe rpg rpi rpk rpl rpn rpo rpp rpr rps rrd rrg rri rrk rrl rrn rrp rrr rrs rsd rse rsg rsi rsk rsl rsn rso rsp rsr rss sdd sde sdg sdi sdk sdl sdn sdo sdp sdr sds se- sed see seg sei sek sel sen seo sep ser ses sgd sge sgg sgi sgk sgl sgn sgo sgp sgr sgs sid sie sig sii sik sil sin sio sip sir sis sk- skd ske skg ski skk skl sko skp skr sks sld sle slg sli slk sll sln slo slp slr sls snd sne sng sni snk snl snn sno snp snr sns sod soe sog soi sok sol son soo sop sor sos spd spe spg spi spk spl spn spo spp spr sps sr- srd sre srg sri srk srl srn sro srp srr srs ss- ssd sse ssg ssi ssk ssl ssn sso ssp ssr sss