Try using already placed beds first

blocks.py

@@ -237,12 +237,31 @@ SAPLINGS = [
     'dark_oak_sapling',
 ]
 
+BEDS = [
+    'white_bed',
+    'orange_bed',
+    'magenta_bed',
+    'light_blue_bed',
+    'yellow_bed',
+    'lime_bed',
+    'pink_bed',
+    'gray_bed',
+    'light_gray_bed',
+    'cyan_bed',
+    'purple_bed',
+    'blue_bed',
+    'brown_bed',
+    'green_bed',
+    'red_bed',
+    'black_bed',
+]
+
 INDEXED = [
     'chest',
     'trapped_chest',
     'emerald_block',
     'barrel',
-]
+] + BEDS
 
 
 NON_SOLID_IDS = set([SINGLE_SNOW])
@@ -310,16 +329,23 @@ for block_name in ['beetroots']:
     for state in JSON_BLOCKS['minecraft:' + block_name]['states']:
         BEETROOT_IDS.add(state['id'])
 
-INDEXED_IDS = set()
-for block_name in INDEXED:
-    for state in JSON_BLOCKS['minecraft:' + block_name]['states']:
-        INDEXED_IDS.add(state['id'])
-
 SAPLING_IDS = set()
 for block_name in SAPLINGS:
     for state in JSON_BLOCKS['minecraft:' + block_name]['states']:
         SAPLING_IDS.add(state['id'])
 
+BED_IDS = set()
+for block_name in BEDS:
+    for state in JSON_BLOCKS['minecraft:' + block_name]['states']:
+        BED_IDS.add(state['id'])
+
+
+
+INDEXED_IDS = set()
+for block_name in INDEXED:
+    for state in JSON_BLOCKS['minecraft:' + block_name]['states']:
+        INDEXED_IDS.add(state['id'])
+
 MATURE_WHEAT_ID = max(WHEAT_IDS)
 MATURE_POTATO_ID = max(POTATO_IDS)
 MATURE_CARROT_ID = max(CARROT_IDS)