-er -ic a-a a-c a-i a-t aaa aac aad aae aai aar aat ac- aca acc acd ace aci acr act ad- ada adc add ade adi adr adt aea aec aed aee aei aer aet ai- aia aic aid aie aii air ait ar- ara arc ard are ari arr art at- ata atc atd ate ati atr att c-- caa cac cad cae cai car cat cca ccc ccd cce cci ccr cct cda cdc cdd cde cdi cdr cdt ce- cea cec ced cee cei cer cet ci- cia cic cid cie cii cir cit cra crc crd cre cri crr crt cta ctc ctd cte cti ctr ctt daa dac dad dae dai dar dat dca dcc dcd dce dci dcr dct dda ddc ddd dde ddi ddr ddt de- dea dec ded dee dei der det di- dia dic did die dii dir dit dra drc drd dre dri drr drt dta dtc dtd dte dti dtr dtt eaa eac ead eae eai ear eat ec- eca ecc ecd ece eci ecr ect ed- eda edc edd ede edi edr edt eea eec eed eee eer eet eia eic eid eie eii eir eit era erc erd ere eri err ert eta etc etd ete eti etr ett i-d ia- iaa iac iad iae iai iar iat ica icc icd ice ici icr ict ida idc idd ide idi idr idt ie- iea iec ied iee iei ier iet iia iic iid iie iii iir iit ir- ira irc ird ire iri irr irt ita itc itd ite iti itt ra- raa rac rad rae rai rar rat rca rcc rcd rce rci rcr rct rda rdc rdd rde rdi rdr rdt re- rea rec red ree rei rer ret ria ric rid rie rii rir rit rra rrc rrd rri rrr rrt rta rtc rtd rte rti rtr rtt taa tac tad tae tai tar tat tca tcc tcd tce tci tcr tct tda tdc tdd tde tdi tdr tdt te- tea tec ted tee tei ter tet tia tic tid tie tii tir tit tra trc trd tre tri trr trt tta ttc ttd tte tti ttr ttt