SIGNPOST

go in is it no oi on op os pi si so ti to

gin gip git gos got ins ion its nip nit nog nos not ons ops opt pig pin pis pit poi pot psi pst sin sip sis sit son sop sos sot tin tip tis tog ton top

gins gips gist gits into ions nips nits nogs opts pigs ping pins pint pion piso piss pits pois pong pons post pots psis psst sign sing sins sips sits snip snit snog snot song sons sops sots spin spit spot stop ting tins tips togs tong tons topi tops toss