g-p ggg ggi ggn ggp ggs gig gii gin gip gis gni gnn gnp gns gpg gpi gpn gpp gps gsg gsi gsn gsp gss igg igi ign igp igs iii iin iip iis in- ing ini inn inp ins ipg ipi ipn ipp ips is- isg isi isn isp iss n-i ngg ngi ngn ngp ngs nig nii nin nip nis nng nni nnn nnp nns npg npi npn npp nps nsg nsi nsn nsp nss p-p pgg pgi pgn pgp pgs pig pii pin pip pis pn- png pni pnn pnp pns ppg ppi ppn ppp pps ps- psg psi psn psp pss sgg sgi sgn sgp sgs sig sii sin sip sis sng sni snn snp sns spg spi spn spp sps ss- ssg ssi ssn ssp sss