Template:Unicode chart Combining Diacritical Marks for Symbols

Combining Diacritical Marks for Symbols[1][2]
Official Unicode Consortium code chart (PDF)
  0 1 2 3 4 5 6 7 8 9 A B C D E F
U+20Dx ◌⃐ ◌⃑ ◌⃒ ◌⃓ ◌⃔ ◌⃕ ◌⃖ ◌⃗ ◌⃘ ◌⃙ ◌⃚ ◌⃛ ◌⃜ ◌⃝ ◌⃞ ◌⃟
U+20Ex ◌⃠ ◌⃡ ◌⃢ ◌⃣ ◌⃤ ◌⃥ ◌⃦ ◌⃧ ◌⃨ ◌⃩ ◌⃪ ◌⃫ ◌⃬ ◌⃭ ◌⃮ ◌⃯
U+20Fx ◌⃰
Notes
1.^ As of Unicode version 16.0
2.^ Grey areas indicate non-assigned code points