-up g-p ggg ggn ggp ggr ggu gnn gnp gnr gnu gpg gpn gpp gpr gpu grg grn grp grr gru gu- gug gun gup gur guu ngg ngn ngp ngu nng nnn nnp nnu npg npn npp npr npu nrg nrn nrp nrr nru nug nun nup nur nuu p-p pgg pgn pgp pgr pn- png pnn pnp pnr pnu ppg ppn ppp ppr ppu prg prn prp prr pru pug pun pup pur puu rgg rgn rgp rgr rng rnn rnp rnr rnu rpg rpn rpp rpr rpu rrg rrn rrp rrr rru rug run rup rur ruu ugg ugn ugp ugr ugu un- ung unn unp unr unu up- upg upn upp upr upu ur- urg urn urp urr uru uug uun uur uuu