oss p-p paa pad pae pai pal pam pan pao pap par pas pda pdd pde pdi pdl pdm pdn pdo pdp pdr pds pea ped pee pei pel pem pen peo pep per pes pia pid pie pii pil pim pin pio pip pir pis pla pld ple pli pll plm pln plo plp plr pls pma pmd pme pmi pml pmm pmn pmo pmp pmr pms pn- pna pnd pne pni pnl pnm pnn pno pnp pnr pns poa pod poe poi pol pom pon poo pop por pos ppa ppd ppe ppi ppl ppm ppn ppo ppp ppr pps pra prd pre pri prl prm prn pro prp prr prs ps- psa psd pse psi psl psm psn pso psp psr pss ra- raa rad rae rai ral ram ran rao rap rar ras rda rdd rde rdi rdl rdm rdn rdo rdp rdr rds re- rea red ree rei rel rem ren reo rep rer res ria rid rie rii ril rim rin rio rip rir ris rla rld rle rli rll rlm rln rlo rlp rlr rls rma rmd rme rmi rml rmm rmn rmo rmp rmr rms rna rnd rni rnm rnn rno rnp rnr rns roa rod roe roi rol rom ron roo rop ror ros rpa rpd rpe rpi rpl rpm rpn rpo rpp rpr rps rra rrd rri rrl rrm rrn rrp rrr rrs rsa rsd rse rsi rsl rsm rsn rso rsp rsr rss saa sad sae sai sal sam san sao sap sar sas sda sdd sde sdi sdl sdm sdn sdo sdp sdr sds se- sea sed see sei sel sem sen seo sep ser ses sia sid sie sii sil sim sin sio sip sir sis sla sld sle sli sll slm sln slo slp slr sls sma smd sme smi sml smm smn smo smp smr sms sna snd sne sni snl snm snn sno snp snr sns soa sod soe soi sol som son soo sop sor sos spa spd spe spi spl spm spn spo spp spr sps sr- sra srd sre sri srl srm srn sro srp srr srs ss- ssa ssd sse ssi ssl ssm ssn sso ssp ssr sss