-up iii iin iip iir iiu iix in- ini inn inp inr inu inx ipi ipn ipp ipr ipu ipx ir- iri irn irp irr iru irx iu- iui iup iur ixi ixn n-i nii nin nip nir niu nix nni nnn nnp nnu npi npn npp npr npu nri nrn nrp nrr nru nrx nui nun nup nur nuu nux p-p pii pin pip pir piu pix pn- pni pnn pnp pnr pnu pnx ppi ppn ppp ppr ppu ppx pri prn prp prr pru prx pui pun pup pur puu pxr rii rin rip rir rix rni rnn rnp rnr rnu rpi rpn rpp rpr rpu rpx rri rrn rrp rrr rru rui run rup rur ruu rux rxp rxr uii uin uip uir uiu un- uni unn unp unr unu unx up- upi upn upp upr upu upx ur- uri urn urp urr uru urx uun uur uuu uxr uxu xii xin xiu xix xnu xpn xpp xrx xui xun xup xxi xxp xxx