Used for Ancient Greek

These are used as editorial signs for Ancient Greek to indicate scribal deletion of erroneous accent marks.
1DC0 ◌᷀ Combining Dotted Grave Accent
  1FED ῭ greek dialytika and varia
1DC1 ◌᷁ Combining Dotted Acute Accent
  0344 ◌̈́ combining greek dialytika tonos
  1FEE ΅ greek dialytika and oxia

Miscellaneous marks

1DC2 ◌᷂ Combining Snake Below
1DC3 ◌᷃ Combining Suspension Mark
  Glagolitic
  0306 ◌̆ combining breve

Contour tone marks

1DC4 ◌᷄ Combining Macron-Acute
1DC5 ◌᷅ Combining Grave-Macron
1DC6 ◌᷆ Combining Macron-Grave
1DC7 ◌᷇ Combining Acute-Macron
1DC8 ◌᷈ Combining Grave-Acute-Grave
1DC9 ◌᷉ Combining Acute-Grave-Acute

Miscellaneous mark

1DCA ◌᷊ Combining Latin Small Letter R Below

Contour tone marks

1DCB ◌᷋ Combining Breve-Macron
  Lithuanian dialectology
1DCC ◌᷌ Combining Macron-Breve
  Lithuanian dialectology

Double diacritic

1DCD ◌᷍ Combining Double Circumflex Above

Medievalist additions

1DCE ◌᷎ Combining Ogonek Above
1DCF ◌᷏ Combining Zigzag Below
1DD0 ◌᷐ Combining Is Below
1DD1 ◌᷑ Combining Ur Above
1DD2 ◌᷒ Combining Us Above

Medieval superscript letter diacritics

1DD3 ◌ᷓ Combining Latin Small Letter Flattened Open A Above
1DD4 ◌ᷔ Combining Latin Small Letter Ae
1DD5 ◌ᷕ Combining Latin Small Letter Ao
1DD6 ◌ᷖ Combining Latin Small Letter Av
1DD7 ◌ᷗ Combining Latin Small Letter C Cedilla
1DD8 ◌ᷘ Combining Latin Small Letter Insular D
1DD9 ◌ᷙ Combining Latin Small Letter Eth
1DDA ◌ᷚ Combining Latin Small Letter G
1DDB ◌ᷛ Combining Latin Letter Small Capital G
1DDC ◌ᷜ Combining Latin Small Letter K
1DDD ◌ᷝ Combining Latin Small Letter L
1DDE ◌ᷞ Combining Latin Letter Small Capital L
1DDF ◌ᷟ Combining Latin Letter Small Capital M
1DE0 ◌ᷠ Combining Latin Small Letter N
1DE1 ◌ᷡ Combining Latin Letter Small Capital N
1DE2 ◌ᷢ Combining Latin Letter Small Capital R
1DE3 ◌ᷣ Combining Latin Small Letter R Rotunda
1DE4 ◌ᷤ Combining Latin Small Letter S
1DE5 ◌ᷥ Combining Latin Small Letter Long S
1DE6 ◌ᷦ Combining Latin Small Letter Z

Double diacritic mark for UPA

1DFC ◌᷼ Combining Double Inverted Breve Below

Miscellaneous mark

1DFD ◌᷽ Combining Almost Equal To Below

Additional marks for UPA

1DFE ◌᷾ Combining Left Arrowhead Above
1DFF ◌᷿ Combining Right Arrowhead And Down Arrowhead Below