diff --git a/input/kinetics/families/H_Abstraction/groups.py b/input/kinetics/families/H_Abstraction/groups.py
index e1c5d81fc9..ca9718eb32 100644
--- a/input/kinetics/families/H_Abstraction/groups.py
+++ b/input/kinetics/families/H_Abstraction/groups.py
@@ -21,14 +21,19 @@
 entry(
     index = 0,
     label = "X_H_or_Xrad_H_Xbirad_H_Xtrirad_H",
-    group = "OR{Xtrirad_H, Xbirad_H, Xrad_H, X_H}",
+    group = """
+1 *1 R u[0,1,2,3] {2,S}
+2 *2 H u0 {1,S}
+""",
     kinetics = None,
 )
 
 entry(
     index = 1,
     label = "Y_rad_birad_trirad_quadrad",
-    group = "OR{Y_rad, Y_1centerbirad, Y_1centertrirad, Y_1centerquadrad}",
+    group = """
+1 *3 R u[1,2,3,4]
+""",
     kinetics = None,
 )