-er -ic -th bbb bbc bbe bbh bbi bbo bbr bbt bcb bcc bce bch bci bco bcr bct be- beb bec bee beh bei beo ber bet bhb bhc bhe bhh bhi bho bhr bht bi- bib bic bie bih bii bio bir bit bob boc boe boh boi boo bor bot brb bre brh bri bro brr brt btb btc bte bth bti bto btr btt c-- cbb cbc cbe cbh cbi cbo cbr cbt ccb ccc cce cch cci cco ccr cct ce- ceb cec cee ceh cei ceo cer cet ch- chb chc che chh chi cho chr cht ci- cib cic cie cih cii cio cir cit co- cob coc coe coh coi coo cor cot crb crc cre crh cri cro crr crt ctb ctc cte cth cti cto ctr ctt ebb ebc ebe ebh ebi ebo ebr ebt ec- ecb ecc ece ech eci eco ecr ect eeb eec eee eeo eer eet ehb ehc ehe ehh ehi eho ehr eht eib eic eie eii eio eir eit eo- eob eoc eoe eoh eoi eoo eor eot erb erc ere erh eri ero err ert etb etc ete eth eti eto etr ett h-i hbb hbc hbe hbh hbi hbo hbr hbt hcb hcc hce hch hci hco hcr hct he- heb hec hee heh hei heo her het hhb hhc hhe hhh hhi hho hhr hht hib hic hie hih hii hio hir hit hob hoc hoe hoh hoi hoo hor hot hr- hrb hrc hre hrh hri hro hrr hrt htb htc hte hth hti hto htr htt ibb ibc ibe ibh ibi ibo ibr ibt icb icc ice ich ici ico icr ict ie- iec iee iei ier iet ihb ihc ihe ihh ihi iho ihr iht iib iic iie iih iii iio iir iit io- iob ioc ioe ioh ioi ioo ior iot ir- irb irc ire iri iro irr irt itb itc ite ith iti ito itt o-i ob- obb obc obe obh obi obo obr obt oc- ocb occ och oci oco ocr oct oeb oec oee oeh oei oeo oer oet ohc ohe ohh ohi oho ohr oht oib oic oie oii oio oir oit oo- oob ooc ooh ooi ooo oor oot or- orb orc ore orh ori oro orr ort ot- otb otc ote oth oti oto otr ott rbb rbc rbe rbh rbi rbo rbr rbt rcb rcc rce rch rci rco rcr rct re- reb rec ree reh rei reo rer ret rh- rhb rhc rhe rhh rhi rho rhr rht rib ric rie rih rii rio rir rit rob roc roe roh roi roo ror rot rrb rrc rrh rri rrr rrt rtb rtc rte rti rto rtr rtt tbb tbc tbe tbh tbi tbo tbr tbt tcb tcc tce tch tci tco tcr tct te- teb tec tee teh tei teo ter tet th- thb thc the thh thi tho thr tht tib tic tie tih tii tio tir tit to- tob toc toe toh toi too tor tot trb trc tre trh tri tro trr trt ttb ttc tte tth tti tto ttr ttt