-ic bbb bbc bbe bbg bbi bbn bbo bbs bcb bcc bce bcg bci bcn bco bcs be- beb bec bee beg bei ben beo bes bgb bgc bge bgg bgi bgn bgo bgs bi- bib bic bie big bii bin bio bis bnb bnc bne bng bni bnn bno bns bob boc boe bog boi bon boo bos bsb bsc bse bsg bsi bsn bso bss c-- cbb cbc cbe cbg cbi cbn cbo cbs ccb ccc cce ccg cci ccn cco ccs ce- ceb cec cee ceg cei cen ceo ces cgb cgc cge cgg cgi cgn cgo cgs ci- cib cic cie cig cii cin cio cis cn- cnb cnc cne cng cni cnn cno cns co- cob coc coe cog coi con coo cos csb csc cse csg csi csn cso css ebb ebc ebe ebg ebi ebn ebo ebs ec- ecb ecc ece ecg eci ecn eco ecs eeb eec eee eeg een eeo ees egb egc ege egg egi egn ego egs eib eic eie eig eii ein eio eis en- enb enc ene eng eni enn eno ens eo- eob eoc eoe eog eoi eon eoo eos es- esb esc ese esg esi esn eso ess gbc gbe gbg gbi gbn gbo gbs gcb gcc gce gcg gci gcn gco gcs ge- geb gec gee geg gei gen geo ges ggb ggc ggg ggi ggn ggo ggs gib gic gie gig gii gin gio gis gnb gnc gne gni gnn gno gns gob goc goe gog goi gon goo gos gsb gsc gse gsg gsi gsn gso gss ibb ibc ibe ibg ibi ibn ibo ibs icb icc ice icg ici icn ico ics ie- iec iee ieg iei ien ies igb igc ige igg igi ign igo igs iib iic iie iii iin iio iis in- inb inc ine ing ini inn ino ins io- iob ioc ioe iog ioi ion ioo ios is- isb isc ise isg isi isn iso iss n-i nbb nbc nbe nbg nbi nbn nbo nbs ncb ncc nce ncg nci ncn nco ncs ne- neb nec nee neg nei nen neo nes ngb ngc nge ngg ngi ngn ngo ngs nib nic nie nig nii nin nio nis nnb nnc nne nng nni nnn nno nns no- nob noc noe nog noi non noo nos nsb nsc nse nsg nsi nsn nso nss o-i ob- obb obc obe obg obi obn obo obs oc- ocb occ ocg oci ocn oco ocs oeb oec oee oeg oei oen oeo oes ogc oge ogg ogi ogn ogo ogs oib oic oie oii oin oio ois on- onb onc one ong oni onn ono ons oo- oob ooc oog ooi oon ooo oos os- osb osc ose osg osi osn oso oss sbb sbc sbe sbg sbi sbn sbo sbs scb scc sce scg sci scn sco scs se- seb sec see seg sei sen seo ses sgb sgc sge sgg sgi sgn sgo sgs sib sic sie sig sii sin sio sis snb snc sne sng sni snn sno sns sob soc soe sog soi son soo sos ss- ssb ssc sse ssg ssi ssn sso sss