-er a-a a-i aaa aad aae aai aak aar ad- ada add ade adi adk adr aea aed aee aei aek aer ai- aia aid aie aii aik air aka akd ake aki akk akr ar- ara ard are ari ark arr daa dad dae dai dak dar dda ddd dde ddi ddk ddr de- dea ded dee dei dek der di- dia did die dii dik dir dka dke dki dkk dkr dra drd dre dri drk drr eaa ead eae eai eak ear ed- eda edd ede edi edk edr eea eed eee eek eer eia eid eie eii eik eir eka ekd eke eki ekr era erd ere eri erk err i-d ia- iaa iad iae iai iar ida idd ide idi idk idr ie- iea ied iee iei iek ier iia iid iie iii iir ika ike iki ikk ikr ir- ira ird ire iri irk irr ka- kaa kad kae kai kak kar kda kde kdk kdr ke- kea ked kee kei kek ker kia kid kie kii kik kir kke kki kkk kkr kra krd kri krk krr ra- raa rad rae rai rak rar rda rdd rde rdi rdr re- rea red ree rei rek rer ria rid rie rii rik rir rke rkk rra rrd rri rrk rrr