ddd ddi ddn ddo dds ddt ddx di- did dii din dio dis dit dix dnd dni dnn dno dns dnt dod doi don doo dos dot dox dsd dsi dsn dso dss dst dsx dtd dti dtn dto dts dtt dtx dxd dxi dxn dxo dxs dxt dxx i-d idd idi idn ido ids idt idx iid iii iin iio iis iit iix in- ind ini inn ino ins int inx io- iod ioi ion ioo ios iot is- isd isi isn iso iss ist itd iti itn ito its itt itx ixi ixn n-i ndd ndi ndn ndo nds ndt nid nii nin nio nis nit nix nni nnn nno nns nnt no- nod noi non noo nos not nox nsd nsi nsn nso nss nst nsx ntd nti ntn nto nts ntt ntx nxd nxt o-i odd odi odn odo ods odt oid oii oin oio ois oit on- ond oni onn ono ons ont onx oo- ood ooi oon ooo oos oot oox os- osd osi osn oso oss ost osx ot- otd oti otn oto ots ott ox- oxi oxn oxo oxt oxx sdd sdi sdn sdo sds sdt sid sii sin sio sis sit six snd sni snn sno sns snt sod soi son soo sos sot sox ss- ssd ssi ssn sso sss sst ssx std sti stn sto sts stt stx sxi sxn sxs sxt t-x tdd tdi tdn tdo tds tdt tdx tid tii tin tio tis tit tix tnd tni tnn tno tns tnt tnx to- tod toi ton too tos tot tox tsd tsi tsn tso tss tst tsx ttd tti ttn tto tts ttt ttx txi txn txs txt xdi xds xdt xii xin xio xis xit xix xno xns xod xoi xon xoo xos xot xox xsi xss xst xti xts xtx xxi xxo xxx