-er -ic c-- ccc ccd cce cci cck ccr cct cdc cdd cde cdi cdk cdr cdt ce- cec ced cee cei cek cer cet ci- cic cid cie cii cik cir cit ckc ckd cki ckt crc crd cre cri crk crr crt ctc ctd cte cti ctk ctr ctt dcc dcd dce dci dck dcr dct ddc ddd dde ddi ddk ddr ddt de- dec ded dee dei dek der det di- dic did die dii dik dir dit dkc dke dki dkk dkr dkt drc drd dre dri drk drr drt dtc dtd dte dti dtk dtr dtt ec- ecc ecd ece eci eck ecr ect ed- edc edd ede edi edk edr edt eec eed eee eek eer eet eic eid eie eii eik eir eit ekc ekd eke eki ekr ekt erc erd ere eri erk err ert etc etd ete eti etk etr ett i-d icc icd ice ici ick icr ict idc idd ide idi idk idr idt ie- iec ied iee iei iek ier iet iic iid iie iii iir iit ikc ike iki ikk ikr ikt ir- irc ird ire iri irk irr irt itc itd ite iti itk itt k-t kcc kcd kce kci kck kcr kct kdc kde kdk kdr kdt ke- kec ked kee kei kek ker ket kic kid kie kii kik kir kit kkc kke kki kkk kkr kkt krc krd kri krk krr krt ktc kte ktk ktr ktt rcc rcd rce rci rcr rct rdc rdd rde rdi rdr rdt re- rec red ree rei rek rer ret ric rid rie rii rik rir rit rkc rke rkk rkt rrc rrd rri rrk rrr rrt rtc rtd rte rti rtk rtr rtt tcc tcd tce tci tck tcr tct tdc tdd tde tdi tdk tdr tdt te- tec ted tee tei tek ter tet tic tid tie tii tik tir tit tkc tke tkk tkr tkt trc trd tre tri trk trr trt ttc ttd tte tti ttk ttr ttt

c-cd cccc ccci ccdc ccdi ccdr cced ccee ccic ccid ccii ccir ccrc ccre ccri ccrt cctc cctt cd-e cd-r cddr cdec cder cdic cdii cdre cec- cece ceci cect cedd cede cedi cedt ceec ceke cer- cerc cerd cere ceri cert cet- cete ceti cicc cici cicr cict cidc cide cidi cidr cidt ciee cier ciid ciii ciit cikr circ cire ciri cirk cirr cirt cite citi citt ckck cker ckrc ckrd crcc crce crcr crdc cre- crec cred cree crei cret cric crie crik crit crkc crrt crtc ctec ctic ctrc dccc dcci dcct dcii dcrk dctc dddd ddie ddrc ddre dec- decc decd dece deci deck dect dedd dede dedi deed deek deer deet deid deie deir deit dek- deke der- derc dere deri derk derr dete detk detr dice dici dick dict dide didi died dier diet diii dike diki dird dire dirk dirr dirt dite diti ditt dkdc dkid dred dree drei drek dret dric drie drit dtcc dted dtek dtki eccc ecce ecci ecct ecdc eced ecit ecrc ecri ecrr ect- ectc eddc edde eddi ede- edei eder edie edik edit eede eeee eeke eerc eetc eete eick eid- eide eidi eidr eiec eied eiei eier eike eiki eird eire eitc eiti eitr eked ekek eker eket ekki ercc erce erde erdi erec ered erei erer eret eric erie erik erit erke erki errc erre etcc etec etee eter etic etik etre ette etti iccc icci iccr icct icdc icdd icde icec iced icee icer icet icke icrc icre icrr icrt idce idcr idec ided idee ider idic idid idie idir idrc idre iecc iedr ieet ieie iere ieri iett iicd iide iied iiie iiii iiit iirc iitr iitt ikee iker ikid ikki ikri ircc ircd irdc ired iree irer iri- iric irid irie irki irrc irre irri irte irti itec itek iter itet itic itie itri k-ci k-id kccc kccd kcci kcck kccr kcct kcdc kcdd kcdi kcdr kcec kced kcee kcei kcet kcic kcid kcie kcii kcir kcit kckc kckk kckr kcrc kcri kcrr kcrt kctc kcte kcti kdcc kdcd kdce kdcr kddc kddd kddi kddk kddr kdec kdei kdet kdic kdkd kdkk kdkr kdkt kdri kdtd kdti kdtr keck kecr kedc kedd kede kedi kedr kedt keed keek keer keet keid keii keik keir kekc keke keki ker- kerc kere keri kerk kerr kert ket- ketc ketd kete keti ketk ketr kett kicc kicd kice kick kicr kict kidd kide kidi kidk kidr kier kiic kiid kiii kiik kiit kikc kikd kiki kikk kikr kikt kirc kiri kirk kirr kirt kitc kite kiti kitr kitt kkcd kkci kkck kkcr kkct kkdc kkdd kkdt kked kkic kkid kkik kkit kkkk kkrc kkre kkrk kkrr kkrt kktc kktk krcc krcd krce krci krdc krdd krde krdr krec kred kree krei krek kret krid krik krit krkc krkd krke krki krkk krkr krrc krre krri krrk krrr krrt krtc krti krtk krtr ktcc ktce ktck ktcr ktdc ktdd ktde ktdk ktdr ktec kted ktee ktek ktic ktie ktik ktkc ktke ktkk ktkr ktkt ktrc ktre ktri ktrk ktrr ktrt kttc ktti kttk kttr kttt rccc rcdc rcde rcet rcic rcid rcrd rctc rcti rder recc recd rece reci reck recr rect redc redd rede redi redr reed reek reet reid reii reik reir reit reke reki rekt rerd rere reri rert retd rete reti retr rett ricc rice rick rict ridc ridd ride ridi ried riek rier riet rike riki rikk rire riri rite riti ritt rred rrrr rtcc rtce rtdt rtee rtei tccc tcdd tctc tdkr tdri teck tecr tect tedd tede tedi tedk teec teed teek teer teet teic teie teir teke ter- terc tere teri terk terr tete teti tetr tett ticc tice tick tidc tidd tide tie- tied tiee tiei tier tiet tiit tike tiki tird tire tiri tirr titc tite titi titt trcc tre- trec tred tree trei trek tret tri- tric trie trik trit trtc trte trtr tter tttt

-tree c-kit c-tec