c-- ccc ccp ccs cct ccw cpc cpp cps cpt cpw csc csp css cst csw ctc ctp cts ctt ctw cw- cwc cwp cws cwt p-p pcc pcp pcs pct pcw ppc ppp pps ppt ppw ps- psc psp pss pst psw pt- ptc ptp pts ptt ptw pwc pwp pws pwt scc scp scs sct scw spc spp sps spt spw ss- ssc ssp sss sst ssw stc stp sts stt stw swc swp sws swt tcc tcp tcs tct tcw tpc tpp tps tpt tpw tsc tsp tss tst tsw ttc ttp tts ttt ttw twc twp tws twt tww wcc wcp wcs wct wcw wpc wpp wps wpt wsc wsp wss wst wsw wtc wtp wts wtt wtw wwc wwp wwt www