pmi pml pmm pmo pmp pms poc pod poe poh poi pol pom poo pop pos poy ppc ppd ppe pph ppi ppl ppm ppo ppp pps ps- psc psd pse psh psi psl psm pso psp pss psy py- pyc pyd pye pyl pym pyo pys scc scd sce sch sci scl scm sco scp scs sdc sdd sde sdh sdi sdl sdm sdo sdp sds sdy se- sec sed see seh sei sel sem seo sep ses sey sh- shc shd she shh shi shl shm sho shp shs shy sic sid sie sih sii sil sim sio sip sis slc sld sle slh sli sll slm slo slp sls sly smc smd sme smh smi sml smm smo smp sms smy soc sod soe soh soi sol som soo sop sos soy spc spd spe sph spi spl spm spo spp sps spy ss- ssc ssd sse ssh ssi ssl ssm sso ssp sss sy- syc syd sye syh syi syl sym syp sys ycc ycd yce ych yci ycl yco ycp ycs ycy yde ydl ydo yds ydy yec yed yee yeh yei yel yem yeo yep yes yey yhc yhe yhi yhs yid yie yih yii yim yio yip yis ylc yld yle yli yll ylm yls yly ymc yme ymi yml ymm ymo yms yoc yod yoe yoi yol yom yoo yop yos yoy ypd ypl ypo yps ysc yse ysi ysl ysm yso ysp yss ysy yyc yye yys yyy