phase phase#1 "摸底"
phase hole#21b40fca "决定分组"
phase phase#2 "执行"
hole hole#21b40fca "决定分组" type="Plan" phase=phase#1
node phase#1@1 mark phase=phase#1
node ask#1@1 issue site=ask#1 phase=phase#1
node hole#21b40fca@1 issue site=hole#21b40fca phase=phase#1
node hole#21b40fca@2 mark phase=hole#21b40fca
node phase#2@1 mark phase=phase#2
node ask#2@1 issue site=ask#2 phase=phase#2
edge entry -> phase#1@1 next
edge phase#1@1 -> ask#1@1 next
edge ask#1@1 -> hole#21b40fca@1 next
edge hole#21b40fca@1 -> hole#21b40fca@2 next
edge hole#21b40fca@2 -> phase#2@1 next
edge phase#2@1 -> ask#2@1 next
edge ask#2@1 -> sink jump via=return
phase-edge entry -> phase#1 next
phase-edge phase#1 -> hole#21b40fca next
phase-edge hole#21b40fca -> phase#2 next
phase-edge phase#2 -> sink jump via=return
