a-a aaa aag aan aap aar ag- aga agg agn agp agr an- ana ang ann anp anr ap- apa apg apn app apr ar- ara arg arn arp arr g-p gaa gag gan gap gar gga ggg ggn ggp ggr gna gnn gnp gnr gpa gpg gpn gpp gpr gra grg grn grp grr naa nag nan nap nar nga ngg ngn ngp nna nng nnn nnp npa npg npn npp npr nra nrg nrn nrp nrr p-p paa pag pan pap par pga pgg pgn pgp pgr pn- pna png pnn pnp pnr ppa ppg ppn ppp ppr pra prg prn prp prr ra- raa rag ran rap rar rga rgg rgn rgp rgr rna rng rnn rnp rnr rpa rpg rpn rpp rpr rra rrg rrn rrp rrr