Day 156:

Dec 3-cyhydedd naw ban, monorhymed, rhyme scheme of added cyhydedd hir or toddaid couplets must remain consistent w/ main rhyme. last syllable of  9 syllable line carries linking rhyme to end syllable in succeeding stanzas. XXXXXXXXa, XXXXXXXXa, XXXXXXXXa. OR XXXXXXXXa(4 lines) Some have added other Celtic forms such as Toddaid[x x x x x x x B x x/ x x x x B x x x C], or Cyhydedd hir[x x x x x A x x x B/ x x x x B x x x C to merge with it. Celtic.

The cyhydedd naw ban is real fine

Nine syllables must rhyme in each line

Make them like couplets to close the sign.