gggg ggpo ggss gogo gogs goog goop goor goos gopo gops gorg goro gorp gorr gors goso goss gpgp gpos gprp gprs gpsg gpso gpss grog groo grop gror gros grps grrr grrs grss gsos ogog ogro oooo ooos oops opo- opor opos oppo opps orgo orgs oro- oror oros orps orro orrs orso osoo osor osos osro osso pgss pogg pogo pogs poop poor poos pop- popo popp pops porg poro porr pors poso poss ppos pppo pppp ppps ppss prgs pro- prog proo prop pros prps prrs prso prss psgr psos pspp pspr psps psrp psso rogg rogo roog roop roor roos ropo rops roro roso rosp ross rpgs rpos rpps rrrr rrsp rsos rspo rsps s-os sggg sggs sgps sgro sgss sogo sogs soog soop soor soos sopo sopp sops sorg soro sorr sors soso soss spoo spop spor spos spps spro sprs spso spsp spss sros srps srsp ssgs ssop sspo ssps ssrg ssrs ssss