-er -ey eee een eep eer eey eie eii ein eip eir en- ene eni enn enp enr eny ep- epe epi epn epp epr ere eri ern erp err ery eye eyn eyp eyr ie- iee iei ien iep ier iey iie iii iin iip iir in- ine ini inn inp inr iny ipe ipi ipn ipp ipr ipy ir- ire iri irn irp irr iry iye iyr iyy n-i ne- nee nei nen nep ner ney nie nii nin nip nir nne nni nnn nnp npe npi npn npp npr nre nri nrn nrp nrr nry nye nyn nyp nyy p-p pee pei pen pep per pey pie pii pin pip pir pn- pne pni pnn pnp pnr pny ppe ppi ppn ppp ppr pre pri prn prp prr pry py- pye pyn pyr re- ree rei ren rep rer rey rie rii rin rip rir riy rni rnn rnp rnr rny rpe rpi rpn rpp rpr rri rrn rrp rrr ry- rye ryn ryr ryy yee yei yen yep yer yey yie yii yin yip yir yne ynn ynp yny yre yrn yrp yye yyy