-er -ic b-p bbb bbc bbe bbg bbi bbn bbo bbp bbr bbs bbt bcb bcc bce bcg bci bcn bco bcp bcr bcs bct be- beb bec bee beg bei ben beo bep ber bes bet bgb bgc bge bgg bgi bgn bgo bgp bgr bgs bgt bi- bib bic bie big bii bin bio bip bir bis bit bnb bnc bne bng bni bnn bno bnp bnr bns bnt bob boc boe bog boi bon boo bop bor bos bot bpb bpc bpe bpg bpi bpn bpo bpp bpr bps bpt brb bre brg bri brn bro brp brr brs brt bsb bsc bse bsg bsi bsn bso bsp bsr bss bst btb btc bte btg bti btn bto btp btr bts btt c-- cbb cbc cbe cbg cbi cbn cbo cbp cbr cbs cbt ccb ccc cce ccg cci ccn cco ccp ccr ccs cct ce- ceb cec cee ceg cei cen ceo cep cer ces cet cgb cgc cge cgg cgi cgn cgo cgp cgr cgs cgt ci- cib cic cie cig cii cin cio cip cir cis cit cn- cnb cnc cne cng cni cnn cno cnp cnr cns cnt co- cob coc coe cog coi con coo cop cor cos cot cpb cpc cpe cpg cpi cpn cpo cpp cpr cps cpt crb crc cre crg cri crn cro crp crr crs crt csb csc cse csg csi csn cso csp csr css cst ctb ctc cte ctg cti ctn cto ctp ctr cts ctt ebb ebc ebe ebg ebi ebn ebo ebp ebr ebs ebt ec- ecb ecc ece ecg eci ecn eco ecr ecs ect eeb eec eee eeg een eeo eep eer ees eet egb egc ege egg egi egn ego egp egr egs egt eib eic eie eig eii ein eio eip eir eis eit en- enb enc ene eng eni enn eno enp enr ens ent eo- eob eoc eoe eog eoi eon eoo eop eor eos eot ep- epb epc epe epg epi epn epo epp epr eps ept erb erc ere erg eri ern ero erp err ers ert es- esb esc ese esg esi esn eso esp esr ess est etb etc ete etg eti etn eto etp etr ets ett g-p gbc gbe gbg gbi gbn gbo gbp gbr gbs gbt gcb gcc gce gcg gci gcn gco gcp gcr gcs gct ge- geb gec gee geg gei gen geo gep ger ges get ggb ggc ggg ggi ggn ggo ggp ggr ggs ggt gib gic gie gig gii gin gio gip gir gis git gnb gnc gne gni gnn gno gnp gnr gns gnt gob goc goe gog goi gon goo gop gor gos got gpb gpc gpe gpg gpi gpn gpo gpp gpr gps gpt grb grc gre grg gri grn gro grp grr grs grt gsb gsc gse gsg gsi gsn gso gsp gsr gss gst gtb gtc gte gtg gti gtn gto gtp gtr gts gtt ibb ibc ibe ibg ibi ibn ibo ibp ibr ibs ibt icb icc ice icg ici icn ico icp icr ics ict ie- iec iee ieg iei ien iep ier ies iet igb igc ige igg igi ign igo igp igr igs igt iib iic iie iii iin iio iip iir iis iit in- inb inc ine ing ini inn ino inp inr ins int io- iob ioc ioe iog ioi ion ioo iop ior ios iot ipb ipc ipe ipg ipi ipn ipo ipp ipr ips ipt ir- irb irc ire irg iri irn iro irp irr irs irt is- isb isc ise isg isi isn iso isp isr iss ist itb itc ite itg iti itn ito itp its itt n-i nbb nbc nbe nbg nbi nbn nbo nbp nbr nbs nbt ncb ncc nce ncg nci ncn nco ncp ncr ncs nct ne- neb nec nee neg nei nen neo nep ner nes net ngb ngc nge ngg ngi ngn ngo ngp ngs ngt nib nic nie nig nii nin nio nip nir nis nit nnb nnc nne nng nni nnn nno nnp nns nnt no- nob noc noe nog noi non noo nop nor nos not npb npc npe npg npi npn npo npp npr nps npt nrb nrc nre nrg nri nrn nro nrp nrr nrs nrt nsb nsc nse nsg nsi nsn nso nsp nsr nss nst ntb ntc nte ntg nti ntn nto ntp ntr nts ntt o-i ob- obb obc obe obg obi obn obo obp obr obs obt oc- ocb occ ocg oci ocn oco ocp ocr ocs oct oeb oec oee oeg oei oen oeo oep oer oes oet ogc oge ogg ogi ogn ogo ogp ogs ogt oib oic oie oii oin oio oip oir ois oit on- onb onc one ong oni onn ono onp onr ons ont oo- oob ooc oog ooi oon ooo oop oor oos oot op- opb opc ope opg opi opn opo opp opr ops opt or- orb orc ore org ori orn oro orp orr ors ort os- osb osc ose osg osi osn oso osp osr oss ost ot- otb otc ote otg oti otn oto otp otr ots ott p-p pbb pbc pbe pbg pbi pbn pbo pbp pbr pbs pbt pcb pcc pce pcg pci pcn pco pcp pcr pcs pct peb pec pee peg pei pen peo pep per pes pet pgb pgc pge pgg pgi pgn pgo pgp pgr pgs pgt pib pic pie pig pii pin pio pip pir pis pit pn- pnb pnc pne png pni pnn pno pnp pnr pns pnt pob poc poe pog poi pon poo pop por pos pot ppb ppc ppe ppg ppi ppn ppo ppp ppr pps ppt prb prc pre prg pri prn pro prp prr prs prt ps- psb psc pse psg psi psn pso psp psr pss pst pt- ptb ptc pte ptg pti ptn pto ptp ptr pts ptt rbb rbc rbe rbg rbi rbn rbo rbp rbr rbs rbt