-er ddd dde ddg ddi ddk ddn ddo ddr de- ded dee deg dei dek den deo der dgd dge dgg dgi dgk dgn dgr di- did die dig dii dik din dio dir dke dkg dki dkk dko dkr dnd dne dng dni dnk dnn dno dnr dod doe dog doi dok don doo dor drd dre drg dri drk drn dro drr ed- edd ede edg edi edk edn edo edr eed eee eeg eek een eeo eer egd ege egg egi egn ego egr eid eie eig eii eik ein eio eir ekd eke ekg eki eko ekr en- end ene eng eni enk enn eno enr eo- eod eoe eog eoi eok eon eoo eor erd ere erg eri erk ern ero err g-d gdd gde gdi gdk gdn gdo gdr ge- ged gee geg gei gek gen geo ger ggd ggg ggi ggn ggo ggr gid gie gig gii gik gin gio gir gkd gkn gko gnd gne gni gnn gno gnr god goe gog goi gok gon goo gor grd gre grg gri grk grn gro grr i-d idd ide idg idi idk idn ido idr ie- ied iee ieg iei iek ien ier igd ige igg igi igk ign igo igr iid iie iii iin iio iir ike iki ikk iko ikr in- ind ine ing ini ink inn ino inr io- iod ioe iog ioi ion ioo ior ir- ird ire irg iri irk irn iro irr kde kdg kdk kdo kdr ke- ked kee keg kei kek ken keo ker kgd kgi kgo kid kie kig kii kik kin kio kir kke kki kkk kkn kkr kn- knd kne kng kni knk knn kno knr kod koe kog koi kok kon koo kor krd krg kri krk krn kro krr n-i ndd nde ndg ndi ndk ndn ndo ndr ne- ned nee neg nei nek nen neo ner ngd nge ngg ngi ngk ngn ngo nid nie nig nii nik nin nio nir nke nki nkk nkn nko nkr nne nng nni nnk nnn nno no- nod noe nog noi nok non noo nor nrd nre nrg nri nrk nrn nro nrr o-i odd ode odg odi odn odo odr oed oee oeg oei oen oeo oer ogd oge ogg ogi ogn ogo oid oie oii oik oin oio oir okd oke okg oki okk oko okr on- ond one ong oni onk onn ono onr oo- ood oog ooi ook oon ooo oor or- ord ore org ori ork orn oro orr rdd rde rdg rdi rdn rdo rdr re- red ree reg rei rek ren reo rer rgd rge rgg rgi rgk rgn rgo rgr rid rie rig rii rik rin rio rir rke rkg rkk rko rnd rng rni rnn rno rnr rod roe rog roi rok ron roo ror rrd rrg rri rrk rrn rrr