b-u bbb bbe bbi bbn bbo bbs bbu bbx be- beb bee bei ben beo bes beu bex bi- bib bie bii bin bio bis biu bix bnb bne bni bnn bno bns bnu bnx bob boe boi bon boo bos bou box bsb bse bsi bsn bso bss bsu bsx bub bue bui bun buo bus buu bux bxb bxi bxn bxo bxx ebb ebe ebi ebn ebo ebs ebu ebx eeb eee een eeo ees eex eib eie eii ein eio eis eiu eix en- enb ene eni enn eno ens enu eo- eob eoe eoi eon eoo eos eou es- esb ese esi esn eso ess esu esx eu- eub eue eui eun eus eux ex- exe exi exo exs exu exx ibb ibe ibi ibn ibo ibs ibu ibx ie- iee iei ien ies iex iib iie iii iin iio iis iiu iix in- inb ine ini inn ino ins inu inx io- iob ioe ioi ion ioo ios iou is- isb ise isi isn iso iss isu iu- iub iue iui ius ixe ixi ixn n-i nbb nbe nbi nbn nbo nbs nbu nbx ne- neb nee nei nen neo nes neu nex nib nie nii nin nio nis niu nix nnb nne nni nnn nno nns nnu no- nob noe noi non noo nos nou nox nsb nse nsi nsn nso nss nsu nsx nub nue nui nun nuo nus nuu nux o-i ob- obb obe obi obn obo obs obu obx oeb oee oei oen oeo oes oex oib oie oii oin oio ois oiu on- onb one oni onn ono ons onu onx oo- oob ooi oon ooo oos oox os- osb ose osi osn oso oss osu osx ou- oue oui oun ouo ous ox- oxb oxi oxn oxo oxx sbb sbe sbi sbn sbo sbs sbu sbx se- seb see sei sen seo ses seu sex sib sie sii sin sio sis siu six snb sne sni snn sno sns snu sob soe soi son soo sos sou sox ss- ssb sse ssi ssn sso sss ssu ssx sub sue sui sun suo sus suu sux sxi sxn sxs sxu ubb ube ubi ubn ubo ubs ubu ubx ueb uee uei uen ues uib uie uii uin uio uis uiu un- unb une uni unn uno uns unu unx uob uoe uon uoo uos uox usb use usi usn uso uss usu usx uue uun uus uuu uxb uxo uxu xbe xbx xee xen xes xeu xex xie xii xin xio xis xiu xix xno xns xnu xoi xon xoo xos xox xsb xsi xss xue xui xun xus xxi xxo xxx