diff --git a/rom.py b/rom.py
index 21d7707..8d3a3ef 100644
--- a/rom.py
+++ b/rom.py
@@ -33,6 +33,9 @@ segment_font = {
     "D": 0b01011110,
     "E": 0b01111001,
     "F": 0b01110001,
+    "a": 0b01110111,
+    "c": 0b00111001,
+    "d": 0b01011110,
     "f": 0b01110001,
     "h": 0b01110100,
     "i": 0b00010000,