-er -ic a-a a-c a-i a-t aaa aac aae aai aak aar aat ac- aca acc ace aci ack acr act aea aec aee aei aek aer aet ai- aia aic aie aii aik air ait aka akc ake aki akk akr ar- ara arc are ari ark arr art at- ata atc ate ati atr att c-- caa cac cae cai cak car cat cca ccc cce cci cck ccr cct ce- cea cec cee cei cek cer cet ci- cia cic cie cii cik cir cit cka ckc cki ckt cra crc cre cri crk crr crt cta ctc cte cti ctk ctr ctt eaa eac eae eai eak ear eat ec- eca ecc ece eci eck ecr ect eea eec eee eek eer eet eia eic eie eii eik eir eit eka ekc eke eki ekr ekt era erc ere eri erk err ert eta etc ete eti etk etr ett ia- iaa iac iae iai iar iat ica icc ice ici ick icr ict ie- iea iec iee iei iek ier iet iia iic iie iii iir iit ika ikc ike iki ikk ikr ikt ir- ira irc ire iri irk irr irt ita itc ite iti itk itt k-t ka- kaa kac kae kai kak kar kat kca kcc kce kci kck kcr kct ke- kea kec kee kei kek ker ket kia kic kie kii kik kir kit kkc kke kki kkk kkr kkt kra krc kri krk krr krt kta ktc kte ktk ktr ktt ra- raa rac rae rai rak rar rat rca rcc rce rci rcr rct re- rea rec ree rei rek rer ret ria ric rie rii rik rir rit rkc rke rkk rkt rra rrc rri rrk rrr rrt rta rtc rte rti rtk rtr rtt taa tac tae tai tak tar tat tca tcc tce tci tck tcr tct te- tea tec tee tei tek ter tet tia tic tie tii tik tir tit tka tkc tke tkk tkr tkt tra trc tre tri trk trr trt tta ttc tte tti ttk ttr ttt