-er -ic a-a a-c a-i a-t aaa aac aad aae aai aar aat aax ac- aca acc acd ace aci acr act acx ad- ada adc add ade adi adr adt adx aea aec aed aee aei aer aet aex ai- aia aic aid aie aii air ait aix ar- ara arc ard are ari arr art arx at- ata atc atd ate ati atr att atx ax- axa axe axi axr axt axx c-- caa cac cad cae cai car cat cax cca ccc ccd cce cci ccr cct ccx cda cdc cdd cde cdi cdr cdt cdx ce- cea cec ced cee cei cer cet cex ci- cia cic cid cie cii cir cit cix cra crc crd cre cri crr crt crx cta ctc ctd cte cti ctr ctt ctx cxc cxi cxr cxt cxx daa dac dad dae dai dar dat dax dca dcc dcd dce dci dcr dct dcx dda ddc ddd dde ddi ddr ddt ddx de- dea dec ded dee dei der det dex di- dia dic did die dii dir dit dix dra drc drd dre dri drr drt drx dta dtc dtd dte dti dtr dtt dtx dxc dxd dxi dxr dxt dxx eaa eac ead eae eai ear eat eax ec- eca ecc ecd ece eci ecr ect ecx ed- eda edc edd ede edi edr edt edx eea eec eed eee eer eet eex eia eic eid eie eii eir eit eix era erc erd ere eri err ert eta etc etd ete eti etr ett etx ex- exa exc exd exe exi exr ext exx i-d ia- iaa iac iad iae iai iar iat ica icc icd ice ici icr ict ida idc idd ide idi idr idt idx ie- iea iec ied iee iei ier iet iex iia iic iid iie iii iir iit iix ir- ira irc ird ire iri irr irt irx ita itc itd ite iti itt itx ixc ixe ixi ra- raa rac rad rae rai rar rat rax rca rcc rcd rce rci rcr rct rcx rda rdc rdd rde rdi rdr rdt rdx re- rea rec red ree rei rer ret rex ria ric rid rie rii rir rit rix rra rrc rrd rri rrr rrt rta rtc rtd rte rti rtr rtt rtx rxr t-x taa tac tad tae tai tar tat tax tca tcc tcd tce tci tcr tct tcx tda tdc tdd tde tdi tdr tdt tdx te- tea tec ted tee tei ter tet tex tia tic tid tie tii tir tit tix tra trc trd tre tri trr trt trx tta ttc ttd tte tti ttr ttt ttx txe txi txt xaa xac xad xar xat xcd xci xcr xcx xda xdc xde xdi xdr xdt xed xee xer xet xex xia xic xie xii xit xix xrc xrd xrt xrx xtc xti xtr xtx xxi xxx