pah pai pal pap par pas pba pbb pbc pbd pbe pbi pbl pbp pbr pbs pca pcb pcc pcd pce pch pci pcl pcp pcr pcs pda pdb pdc pdd pde pdh pdi pdl pdp pdr pds pea peb pec ped pee peh pei pel pep per pes pha phb phc phd phe phi phl php phr phs pia pib pic pid pie pih pii pil pip pir pis pla plb plc pld ple plh pli pll plp plr pls ppa ppb ppc ppd ppe pph ppi ppl ppp ppr pps pra prb prc prd pre prh pri prl prp prr prs ps- psa psb psc psd pse psh psi psl psp psr pss ra- raa rab rac rad rae rah rai ral rap rar ras rba rbb rbc rbd rbe rbh rbi rbl rbp rbr rbs rca rcb rcc rcd rce rch rci rcl rcp rcr rcs rda rdb rdc rdd rde rdh rdi rdl rdp rdr rds re- rea reb rec red ree reh rei rel rep rer res rh- rha rhb rhc rhd rhe rhh rhi rhl rhp rhr rhs ria rib ric rid rie rih rii ril rip rir ris rla rlc rld rle rlh rli rll rlp rlr rls rpa rpb rpc rpd rpe rph rpi rpl rpp rpr rps rra rrb rrc rrd rrh rri rrl rrp rrr rrs rsa rsb rsc rsd rse rsh rsi rsl rsp rsr rss saa sab sac sad sae sah sai sal sap sar sas sba sbb sbc sbd sbe sbh sbi sbl sbp sbr sbs sca scb scc scd sce sch sci scl scp scr scs sda sdb sdc sdd sde sdh sdi sdl sdp sdr sds se- sea seb sec sed see seh sei sel sep ser ses sh- sha shb shc shd she shh shi shl shp shr shs sia sib sic sid sie sih sii sil sip sir sis sla slb slc sld sle slh sli sll slp slr sls spa spb spc spd spe sph spi spl spp spr sps sr- sra srb src srd sre srh sri srl srp srr srs ss- ssa ssb ssc ssd sse ssh ssi ssl ssp ssr sss