llll lloo llps loll lolo lols lool loop loor loos lopp lops loro lors loso losp loss lppl lprp lpss lrps lrrr ls-r lspl lspr lsso lssp lssr ollo olor olos oolo oooo ooos oops opls opo- opor opos oppo opps orlo oro- oror oros orps orro orrs orso oslo osoo osor osos osro osso ploo plop plos plpp plss poll polo pols pool poop poor poos pop- popo popp pops poro porr pors poso poss pplo ppos pppo pppp ppps ppss prlr prls pro- prol proo prop pros prps prrs prsl prso prss psol psos pspp pspr psps psrp psso rlls roll rolo rolp rool roop roor roos ropo rops roro roso rosp ross rpls rpos rpps rrrr rrsp rslp rsos rspo rsps rssl s-os sllp sloo slop slos slpp slps slrp slrs soll solo solp solr sols sool soop soor soos sopo sopp sops soro sorr sors soso soss splo splp splr spls spoo spop spor spos spps spro sprs spso spsp spss sros srps srsp sslp ssop sspl sspo ssps ssrl ssrs ssss