.Co {background: #322} /* private */
/* implementation-based alternatives */
-.l0 {background: #411} /* bmp */
+.l1 {background: #411} /* bmp */
.l2 {background: #321} /* proposed digraph */
-.l4 {background: #330} /* rfc-1345 digraph */
-.l5 {background: #030} /* ascii */
-.l6 {background: #00331D} /* ascii */
-.l9 {background: #222}
+.l3 {background: #330} /* rfc-1345 digraph */
+.l4 {background: #030} /* ascii */
+.l5 {background: #00331D} /* ascii */
+.l0 {background: #222}
.ex {background: #222} /* disfavoured */
.u-invalid {background: #333} /* impossible */