-er -th a-a a-c a-t aaa aac aad aae aah aak aar aat ac- aca acc acd ace ach ack acr act ad- ada adc add ade adh adk adr adt aea aec aed aee aeh aek aer aet aha ahc ahd ahe ahh ahk ahr aht aka akc akd ake akh akk akr ar- ara arc ard are arh ark arr art at- ata atc atd ate ath atr att c-- caa cac cad cae cah cak car cat cca ccc ccd cce cch cck ccr cct cda cdc cdd cde cdh cdk cdr cdt ce- cea cec ced cee ceh cek cer cet ch- cha chc chd che chh chk chr cht cka ckc ckd ckh ckt cra crc crd cre crh crk crr crt cta ctc ctd cte cth ctk ctr ctt daa dac dad dae dah dak dar dat dca dcc dcd dce dck dcr dct dda ddc ddd dde ddh ddk ddr ddt de- dea dec ded dee deh dek der det dh- dha dhc dhd dhe dhh dhk dhr dht dka dkc dke dkk dkr dkt dra drc drd dre drk drr drt dta dtc dtd dte dth dtk dtr dtt eaa eac ead eae eah eak ear eat ec- eca ecc ecd ece ech eck ecr ect ed- eda edc edd ede edh edk edr edt eea eec eed eee eek eer eet eha ehc ehd ehe ehh ehr eht eka ekc ekd eke ekh ekr ekt era erc erd ere erh erk err ert eta etc etd ete eth etk etr ett haa hac had hae hah hak har hat hca hcc hcd hce hch hck hcr hct hda hdc hdd hde hdh hdk hdr hdt he- hea hec hed hee heh hek her het hha hhc hhd hhe hhh hhk hhr hht hka hkd hkh hkk hkr hkt hr- hra hrc hrd hre hrh hrk hrr hrt hta htc htd hte hth htk htr htt k-t ka- kaa kac kad kae kah kak kar kat kca kcc kcd kce kch kck kcr kct kda kdc kde kdh kdk kdr kdt ke- kea kec ked kee keh kek ker ket kha khe khh khk khr kkc kke kkh kkk kkr kkt kra krc krd krk krr krt kta ktc kte kth ktk ktr ktt ra- raa rac rad rae rah rak rar rat rca rcc rcd rce rch rcr rct rda rdc rdd rde rdh rdr rdt re- rea rec red ree reh rek rer ret rh- rha rhc rhd rhe rhh rhr rht rkc rke rkk rkt rra rrc rrd rrh rrk rrr rrt rta rtc rtd rte rtk rtr rtt taa tac tad tae tah tak tar tat tca tcc tcd tce tch tck tcr tct tda tdc tdd tde tdh tdk tdr tdt te- tea tec ted tee teh tek ter tet th- tha thc thd the thh thk thr tht tka tkc tke tkk tkr tkt tra trc trd tre trh trk trr trt tta ttc ttd tte tth ttk ttr ttt