-ic b-u bbb bbc bbe bbi bbn bbo bbu bcb bcc bce bci bcn bco bcu be- beb bec bee bei ben beo beu bi- bib bic bie bii bin bio biu bnb bnc bne bni bnn bno bnu bob boc boe boi bon boo bou bub buc bue bui bun buo buu c-- cbb cbc cbe cbi cbn cbo cbu ccb ccc cce cci ccn cco ccu ce- ceb cec cee cei cen ceo ceu ci- cib cic cie cii cin cio ciu cn- cnb cnc cne cni cnn cno cnu co- cob coc coe coi con coo cou cub cuc cue cui cun cuo cuu ebb ebc ebe ebi ebn ebo ebu ec- ecb ecc ece eci ecn eco ecu eeb eec eee een eeo eib eic eie eii ein eio eiu en- enb enc ene eni enn eno enu eo- eob eoc eoe eoi eon eoo eou eu- eub euc eue eui eun ibb ibc ibe ibi ibn ibo ibu icb icc ice ici icn ico icu ie- iec iee iei ien iib iic iie iii iin iio iiu in- inb inc ine ini inn ino inu io- iob ioc ioe ioi ion ioo iou iu- iub iuc iue iui n-i nbb nbc nbe nbi nbn nbo nbu ncb ncc nce nci ncn nco ncu ne- neb nec nee nei nen neo neu nib nic nie nii nin nio niu nnb nnc nne nni nnn nno nnu no- nob noc noe noi non noo nou nub nuc nue nui nun nuo nuu o-i ob- obb obc obe obi obn obo obu oc- ocb occ oci ocn oco ocu oeb oec oee oei oen oeo oib oic oie oii oin oio oiu on- onb onc one oni onn ono onu oo- oob ooc ooi oon ooo ou- ouc oue oui oun ouo ubb ubc ube ubi ubn ubo ubu ucb ucc uce uci ucn uco ucu ueb uec uee uei uen uib uic uie uii uin uio uiu un- unb unc une uni unn uno unu uob uoc uoe uon uoo uuc uue uun uuu