g-p ggg ggi ggn ggo ggp gig gii gin gio gip gni gnn gno gnp gog goi gon goo gop gpg gpi gpn gpo gpp igg igi ign igo igp iii iin iio iip in- ing ini inn ino inp io- iog ioi ion ioo iop ipg ipi ipn ipo ipp n-i ngg ngi ngn ngo ngp nig nii nin nio nip nng nni nnn nno nnp no- nog noi non noo nop npg npi npn npo npp o-i ogg ogi ogn ogo ogp oii oin oio oip on- ong oni onn ono onp oo- oog ooi oon ooo oop op- opg opi opn opo opp p-p pgg pgi pgn pgo pgp pig pii pin pio pip pn- png pni pnn pno pnp pog poi pon poo pop ppg ppi ppn ppo ppp