-er -ic b-u bbb bbc bbe bbg bbh bbi bbo bbr bbu bcb bcc bce bcg bch bci bco bcr bcu be- beb bec bee beg beh bei beo ber beu bgb bgc bge bgg bgh bgi bgo bgr bgu bhb bhc bhe bhg bhh bhi bho bhr bhu bi- bib bic bie big bih bii bio bir biu bob boc boe bog boh boi boo bor bou brb bre brg brh bri bro brr bru bub buc bue bug buh bui buo bur buu c-- cbb cbc cbe cbg cbh cbi cbo cbr cbu ccb ccc cce ccg cch cci cco ccr ccu ce- ceb cec cee ceg ceh cei ceo cer ceu cgb cgc cge cgg cgh cgi cgo cgr cgu ch- chb chc che chg chh chi cho chr chu ci- cib cic cie cig cih cii cio cir ciu co- cob coc coe cog coh coi coo cor cou crb crc cre crg crh cri cro crr cru cub cuc cue cug cuh cui cuo cur cuu ebb ebc ebe ebg ebh ebi ebo ebr ebu ec- ecb ecc ece ecg ech eci eco ecr ecu eeb eec eee eeg eeo eer egb egc ege egg egh egi ego egr egu ehb ehc ehe ehg ehh ehi eho ehr ehu eib eic eie eig eii eio eir eiu eo- eob eoc eoe eog eoh eoi eoo eor eou erb erc ere erg erh eri ero err eru eu- eub euc eue eug eui eur gbc gbe gbg gbh gbi gbo gbr gbu gcb gcc gce gcg gch gci gco gcr gcu ge- geb gec gee geg geh gei geo ger geu ggb ggc ggg ggh ggi ggo ggr ggu ghb ghc ghe ghg ghh ghi gho ghr gib gic gie gig gih gii gio gir giu gob goc goe gog goh goi goo gor gou grb grc gre grg grh gri gro grr gru gu- gub guc gue gug gui guo gur guu h-i hbb hbc hbe hbg hbh hbi hbo hbr hbu hcb hcc hce hcg hch hci hco hcr he- heb hec hee heg heh hei heo her heu hgb hgc hge hgg hgh hgi hgo hgr hgu hhb hhc hhe hhg hhh hhi hho hhr hhu hib hic hie hig hih hii hio hir hiu hob hoc hoe hog hoh hoi hoo hor hou hr- hrb hrc hre hrg hrh hri hro hrr hru hub huc hue hug huh hui huo hur huu ibb ibc ibe ibg ibh ibi ibo ibr ibu icb icc ice icg ich ici ico icr icu ie- iec iee ieg iei ier igb igc ige igg igh igi igo igr igu ihb ihc ihe ihg ihh ihi iho ihr ihu iib iic iie iih iii iio iir iiu io- iob ioc ioe iog ioh ioi ioo ior iou ir- irb irc ire irg iri iro irr iru iu- iub iuc iue iug iui iur o-i ob- obb obc obe obg obh obi obo obr obu oc- ocb occ ocg och oci oco ocr ocu oeb oec oee oeg oeh oei oeo oer ogc oge ogg ogh ogi ogo ohc ohe ohg ohh ohi oho ohr ohu oib oic oie oii oio oir oiu oo- oob ooc oog ooh ooi ooo oor or- orb orc ore org orh ori oro orr oru ou- ouc oue ouh oui ouo our rbb rbc rbe rbg rbh rbi rbo rbr rbu rcb rcc rce rcg rch rci rco rcr rcu re- reb rec ree reg reh rei reo rer reu rgb rgc rge rgg rgh rgi rgo rgr rh- rhb rhc rhe rhg rhh rhi rho rhr rhu rib ric rie rig rih rii rio rir rob roc roe rog roh roi roo ror rou rrb rrc rrg rrh rri rrr rru rub ruc rue rug ruh rui ruo rur ruu ubb ubc ube ubg ubh ubi ubo ubr ubu ucb ucc uce ucg uch uci uco ucr ucu ueb uec uee ueg ueh uei uer ugb ugc uge ugg ugh ugi ugo ugr ugu uhb uhc uhe uhh uhi uho uhr uhu uib uic uie uig uii uio uir uiu uob uoc uoe uog uoo uor ur- urb urc ure urg uri uro urr uru uuc uue uug uur uuu