a-a aaa aad aan aao aas aax ad- ada add adn ado ads adx an- ana and ann ano ans anx aoa aod aon aoo aos aox as- asa asd asn aso ass asx ax- axa axn axo axs axx daa dad dan dao das dax dda ddd ddn ddo dds ddx dna dnd dnn dno dns doa dod don doo dos dox dsa dsd dsn dso dss dsx dxd dxn dxo dxs dxx naa nad nan nao nas nax nda ndd ndn ndo nds nna nnn nno nns no- noa nod non noo nos nox nsa nsd nsn nso nss nsx nxd oaa oad oan oao oas oax oda odd odn odo ods on- ona ond onn ono ons onx oo- ooa ood oon ooo oos oox os- osa osd osn oso oss osx ox- oxa oxn oxo oxx saa sad san sao sas sax sda sdd sdn sdo sds sna snd snn sno sns soa sod son soo sos sox ss- ssa ssd ssn sso sss ssx sxn sxs xaa xad xan xas xda xds xna xno xns xoa xod xon xoo xos xox xsa xss xxo xxx