opi opl opn opo opp opr opx opy or- orc ord ore orh ori orl orn oro orp orr orx ory ox- oxc oxi oxn oxo oxx oxy oyd oye oyi oyl oyo p-p pcc pcd pce pch pci pcl pcn pco pcp pcr pcx pdc pdd pde pdh pdi pdl pdn pdo pdp pdr pdx pec ped pee peh pei pel pen peo pep per pex pey phc phd phe phi phl phn pho php phr phx phy pic pid pie pih pii pil pin pio pip pir pix plc pld ple plh pli pll pln plo plp plr plx ply pn- pnc pnd pne pnh pni pnl pnn pno pnp pnr pnx pny poc pod poe poh poi pol pon poo pop por pox poy ppc ppd ppe pph ppi ppl ppn ppo ppp ppr ppx prc prd pre prh pri prl prn pro prp prr prx pry pxc pxe pxl pxr py- pyc pyd pye pyl pyn pyo pyr pyx rcc rcd rce rch rci rcl rcn rco rcp rcr rcx rdc rdd rde rdh rdi rdl rdn rdo rdp rdr rdx rdy re- rec red ree reh rei rel ren reo rep rer rex rey rh- rhc rhd rhe rhh rhi rhl rhn rho rhp rhr ric rid rie rih rii ril rin rio rip rir rix riy rlc rld rle rlh rli rll rln rlo rlp rlr rly rnc rnd rnh rni rnn rno rnp rnr rny roc rod roe roh roi rol ron roo rop ror rox roy rpc rpd rpe rph rpi rpl rpn rpo rpp rpr rpx rrc rrd rrh rri rrl rrn rrp rrr rxp rxr ry- ryc ryd rye ryn ryo ryr ryy xcd xch xci xcl xcp xcr xcx xdc xde xdh xdi xdr xed xee xel xen xep xer xex xhd xhp xic xie xii xin xio xix xld xli xlr xnc xno xoc xod xoi xon xoo xop xor xox xpc xpd xpe xpl xpn xpo xpp xrc xrd xrx xry xxi xxl xxo xxp xxx xxy xyl xyp xyr xyy ycc ycd yce ych yci ycl yco ycp ycy yde ydl ydn ydo ydy yec yed yee yeh yei yel yen yeo yep yer yex yey yhc yhe yhi yid yie yih yii yin yio yip yir ylc yld yle yli yll ylr yly ynd yne ynn ynp yny yoc yod yoe yoi yol yon yoo yop yor yox yoy ypd ypl ypo yrc yre yrn yro yrp yxe yxy yyc yye yyy