-er a-a a-i aaa aad aae aag aai aak aar ad- ada add ade adg adi adk adr aea aed aee aeg aei aek aer ag- aga agd age agg agi agk agr ai- aia aid aie aig aii aik air aka akd ake akg aki akk akr ar- ara ard are arg ari ark arr daa dad dae dag dai dak dar dda ddd dde ddg ddi ddk ddr de- dea ded dee deg dei dek der dga dgd dge dgg dgi dgk dgr di- dia did die dig dii dik dir dka dke dkg dki dkk dkr dra drd dre drg dri drk drr eaa ead eae eag eai eak ear ed- eda edd ede edg edi edk edr eea eed eee eeg eek eer ega egd ege egg egi egr eia eid eie eig eii eik eir eka ekd eke ekg eki ekr era erd ere erg eri erk err g-d gaa gad gae gag gai gak gar gda gdd gde gdi gdk gdr ge- gea ged gee geg gei gek ger gga ggd ggg ggi ggr gia gid gie gig gii gik gir gka gkd gra grd gre grg gri grk grr i-d ia- iaa iad iae iag iai iar ida idd ide idg idi idk idr ie- iea ied iee ieg iei iek ier iga igd ige igg igi igk igr iia iid iie iii iir ika ike iki ikk ikr ir- ira ird ire irg iri irk irr ka- kaa kad kae kag kai kak kar kda kde kdg kdk kdr ke- kea ked kee keg kei kek ker kga kgd kgi kia kid kie kig kii kik kir kke kki kkk kkr kra krd krg kri krk krr ra- raa rad rae rag rai rak rar rda rdd rde rdg rdi rdr re- rea red ree reg rei rek rer rga rgd rge rgg rgi rgk rgr ria rid rie rig rii rik rir rke rkg rkk rra rrd rrg rri rrk rrr