Label "merge"
CopyInput 2
CopyInput 1
CopyInput 0
Push 3
CreateFrame 1
StartMatches

Label "merge_0"
MatchRule
MatchAvailable
MatchVar 0
MatchNone
MatchNone
Consume 0
MatchedRule
PushVar 0
CheckOutputs
Write 0
Reorder
Schedule

Label "merge_1"
MatchRule
MatchNone
MatchAvailable
MatchVar 0
MatchNone
Consume 1
MatchedRule
PushVar 0
CheckOutputs
Write 0
Reorder
Schedule

Label "merge_2"
MatchRule
MatchNone
MatchNone
MatchAvailable
MatchVar 0
Consume 2
MatchedRule
PushVar 0
CheckOutputs
Write 0
Reorder
Schedule

Box "merge" "merge" 7 9 3 1 3 "merge_init" "merge_handler" NullT
Rule "merge" "merge_0" "merge_1" "merge_2"
Require "merge" True False False
Require "merge" False True False
Require "merge" False False True

Label "merge_init"
Schedule

Label "merge1_init"
Schedule

Label "merge2_init"
Schedule

Label "merge3_init"
Schedule
Stream "stdout" Out "s_write" "std_out" 2 1 0 NullT
Stream "merge1" In "s_read" "merge1.txt" 2 1 0 NullT
Stream "merge2" In "s_read" "merge2.txt" 2 1 0 NullT
Stream "merge3" In "s_read" "merge3.txt" 2 1 0 NullT
Wire "stdout" 0 "stdout" 0 2 0 NullT
Wire "merge1" 0 "merge1" 0 2 0 NullT
Wire "merge2" 0 "merge2" 0 2 0 NullT
Wire "merge3" 0 "merge3" 0 2 0 NullT

Label "s_read"
Input
Write 0
Schedule

Label "s_write"
CopyInput 0
Consume 0
Output
Schedule

Label "s_timeout"
MkTuple 0
Raise "Timeout"

Label "s_soverflow"
MkTuple 0
Raise "StackOverflow"

Label "s_hoverflow"
MkTuple 0
Raise "HeapOverflow"
Wire "merge" 0 "merge1" 0 2 0 NullT
Wire "merge" 1 "merge2" 0 2 0 NullT
Wire "merge" 2 "merge3" 0 2 0 NullT
Wire "stdout" 0 "merge" 0 2 0 NullT