phase unphased
participant unphased:actor#1 "shared" steps=ask#1,ask#2,ask#3
participant unphased:actor#2 "loner" steps=ask#4
participant unphased:actor#3 "ephemeral" steps=ask#5
handoff unphased:actor#1 -> unphased:actor#2
handoff unphased:actor#2 -> unphased:actor#3
handoff unphased:actor#3 -> unphased:actor#1
