lloro lo-pro lollop looloo loplop lotorp lotpot lottry loyoro oooooo oporto optoro ororry ottoor ploppy plotly plotty ploty plplot polpol polpot polyol polyot poopoo poorly poorty popopo poporo popoyo popply poppop poptop portyr potopy pottop potyry poyry pppppp prolly proloy prolyl proppy propyl propyr proto- pylor- pyotty pyrro- pyrrol pyrryl r-loop rollot rollyo rotolo royllo tootoo topply toppop toprol tororo torpor tortor totopo totoro totrot trollt trolly trooly tropo- troppo tropyl trotro trotty trotyl trytry tyoply yo-pop yoyoyo yttro-