pie pii pik pil pip pir piw pka pkb pkc pkd pke pki pkl pkp pkr pla plb plc pld ple pli plk pll plp plr plw ppa ppb ppc ppd ppe ppi ppk ppl ppp ppr ppw pra prb prc prd pre pri prk prl prp prr prw pwa pwb pwc pwd pwe pwi pwl pwp pwr ra- raa rab rac rad rae rai rak ral rap rar raw rba rbb rbc rbd rbe rbi rbk rbl rbp rbr rbw rca rcb rcc rcd rce rci rcl rcp rcr rcw rda rdb rdc rdd rde rdi rdl rdp rdr re- rea reb rec red ree rei rek rel rep rer rew ria rib ric rid rie rii rik ril rip rir rkb rkc rke rkk rkp rla rlc rld rle rli rll rlp rlr rlw rpa rpb rpc rpd rpe rpi rpk rpl rpp rpr rpw rra rrb rrc rrd rri rrk rrl rrp rrr rwa rwb rwc rwd rwe rwi rwl rwr waa wab wac wad wae wai wak wal wap war waw wba wbb wbc wbd wbe wbi wbr wbw wca wcb wcc wcd wce wci wck wcl wcp wcr wcw wda wdb wdc wdi wdl wdp wdr wea web wec wed wee wei wek wel wep wer wew wia wib wic wid wie wii wik wil wip wir wka wkb wkc wkd wke wkp wkr wkw wl- wla wlb wlc wle wli wll wlp wlr wlw wpa wpb wpc wpd wpe wpi wpk wpl wpp wpr wr- wra wrc wrd wre wri wrk wrl wrp wrr wrw wwa wwc wwd wwe wwi wwl wwp www