-ic b-u bbb bbc bbi bbn bbs bbu bcb bcc bci bcn bcs bcu bi- bib bic bii bin bis biu bnb bnc bni bnn bns bnu bsb bsc bsi bsn bss bsu bub buc bui bun bus buu c-- cbb cbc cbi cbn cbs cbu ccb ccc cci ccn ccs ccu ci- cib cic cii cin cis ciu cn- cnb cnc cni cnn cns cnu csb csc csi csn css csu cub cuc cui cun cus cuu ibb ibc ibi ibn ibs ibu icb icc ici icn ics icu iib iic iii iin iis iiu in- inb inc ini inn ins inu is- isb isc isi isn iss isu iu- iub iuc iui ius n-i nbb nbc nbi nbn nbs nbu ncb ncc nci ncn ncs ncu nib nic nii nin nis niu nnb nnc nni nnn nns nnu nsb nsc nsi nsn nss nsu nub nuc nui nun nus nuu sbb sbc sbi sbn sbs sbu scb scc sci scn scs scu sib sic sii sin sis siu snb snc sni snn sns snu ss- ssb ssc ssi ssn sss ssu sub suc sui sun sus suu ubb ubc ubi ubn ubs ubu ucb ucc uci ucn ucs ucu uib uic uii uin uis uiu un- unb unc uni unn uns unu usb usc usi usn uss usu uuc uun uus uuu