-er -ic b-u bbb bbc bbd bbe bbi bbk bbn bbo bbr bbs bbu bcb bcc bcd bce bci bck bcn bco bcr bcs bcu bdb bdc bdd bde bdi bdk bdo bdr bds bdu be- beb bec bed bee bei bek ben beo ber bes beu bi- bib bic bid bie bii bik bin bio bir bis biu bkb bkc bke bkk bkn bko bkr bks bnb bnc bnd bne bni bnk bnn bno bnr bns bnu bob boc bod boe boi bok bon boo bor bos bou brb brd bre bri brk brn bro brr brs bru bsb bsc bsd bse bsi bsk bsn bso bsr bss bsu bub buc bud bue bui buk bun buo bur bus buu c-- cbb cbc cbd cbe cbi cbk cbn cbo cbr cbs cbu ccb ccc ccd cce cci cck ccn cco ccr ccs ccu cdb cdc cdd cde cdi cdk cdn cdo cdr cds cdu ce- ceb cec ced cee cei cek cen ceo cer ces ceu ci- cib cic cid cie cii cik cin cio cir cis ciu ckb ckc ckd cki cko cks cn- cnb cnc cnd cne cni cnn cno cnr cns cnu co- cob coc cod coe coi cok con coo cor cos cou crb crc crd cre cri crk crn cro crr crs cru csb csc csd cse csi csk csn cso csr css csu cub cuc cud cue cui cuk cun cuo cur cus cuu dbb dbc dbd dbe dbi dbk dbn dbo dbr dbs dbu dcb dcc dcd dce dci dck dcn dco dcr dcs dcu ddb ddc ddd dde ddi ddk ddn ddo ddr dds ddu de- deb dec ded dee dei dek den deo der des deu di- dib dic did die dii dik din dio dir dis diu dkb dkc dke dki dkk dko dkr dks dku dnb dnc dnd dne dni dnk dnn dno dnr dns dob doc dod doe doi dok don doo dor dos dou drb drc drd dre dri drk drn dro drr drs dru dsb dsc dsd dse dsi dsk dsn dso dsr dss dsu dub duc dud due dui duk dun duo dur dus ebb ebc ebd ebe ebi ebk ebn ebo ebr ebs ebu ec- ecb ecc ecd ece eci eck ecn eco ecr ecs ecu ed- edb edc edd ede edi edk edn edo edr eds edu eeb eec eed eee eek een eeo eer ees eib eic eid eie eii eik ein eio eir eis eiu ekb ekc ekd eke eki eko ekr eks eku en- enb enc end ene eni enk enn eno enr ens enu eo- eob eoc eod eoe eoi eok eon eoo eor eos eou erb erc erd ere eri erk ern ero err ers eru es- esb esc esd ese esi esk esn eso esr ess esu eu- eub euc eud eue eui eun eur eus i-d ibb ibc ibd ibe ibi ibk ibn ibo ibr ibs ibu icb icc icd ice ici ick icn ico icr ics icu idb idc idd ide idi idk idn ido idr ids idu ie- iec ied iee iei iek ien ier ies iib iic iid iie iii iin iio iir iis iiu ikb ikc ike iki ikk iko ikr iks iku in- inb inc ind ine ini ink inn ino inr ins inu io- iob ioc iod ioe ioi ion ioo ior ios iou ir- irb irc ird ire iri irk irn iro irr irs iru is- isb isc isd ise isi isk isn iso isr iss isu iu- iub iuc iud iue iui iur ius kbb kbc kbd kbe kbi kbk kbn kbo kbr kbs kbu kcb kcc kcd kce kci kck kcn kcr kcs kcu kdb kdc kde kdk kdo kdr kds kdu ke- keb kec ked kee kei kek ken keo ker kes kib kic kid kie kii kik kin kio kir kis kiu kkb kkc kke kki kkk kkn kkr kks kku kn- knc knd kne kni knk knn kno knr knu kob koc kod koe koi kok kon koo kor kos kou krc krd kri krk krn kro krr krs kru ksb ksc ksd kse ksi ksk ksn kso ksr kss ksu kub kuc kud kue kui kuk kun kur kus kuu n-i nbb nbc nbd nbe nbi nbk nbn nbo nbr nbs nbu ncb ncc ncd nce nci nck ncn nco ncr ncs ncu ndb ndc ndd nde ndi ndk ndn ndo ndr nds ndu ne- neb nec ned nee nei nek nen neo ner nes neu nib nic nid nie nii nik nin nio nir nis niu nkc nke nki nkk nkn nko nkr nks nku nnb nnc nne nni nnk nnn nno nns nnu no- nob noc nod noe noi nok non noo nor nos nou nrb nrc nrd nre nri nrk nrn nro nrr nrs nru nsb nsc nsd nse nsi nsk nsn nso nsr nss nsu nub nuc nud nue nui nuk nun nuo nur nus nuu o-i ob- obb obc obd obe obi obk obn obo obr obs obu oc- ocb occ ocd oci ock ocn oco ocr ocs ocu odb odc odd ode odi odn odo odr ods odu oeb oec oed oee oei oen oeo oer oes oib oic oid oie oii oik oin oio oir ois oiu okb okc okd oke oki okk oko okr oks oku on- onb onc ond one oni onk onn ono onr ons onu oo- oob ooc ood ooi ook oon ooo oor oos or- orb orc ord ore ori ork orn oro orr ors oru os- osb osc osd ose osi osk osn oso osr oss osu ou- ouc oud oue oui ouk oun ouo our ous rbb rbc rbd rbe rbi rbk rbn rbo rbr rbs rbu rcb rcc rcd rce rci rcn rco rcr rcs rcu rdb rdc rdd rde rdi rdn rdo rdr rds rdu re- reb rec red ree rei rek ren reo rer res reu rib ric rid rie rii rik rin rio rir