a =>
    SYNONYM: b
    @_log: "log msg 1 of input a"

c =>
    UP: b
    @_id: "ID 1"

d =>
    UP: b

k =>
    SYNONYM: m
    @_id: "RULE for k"
    @_log: "LOG for k"


m =>
    SYNONYM: z
    @_id: "RULE 1 for m"
    @_log: "LOG 1 for m"

m =>
    SYNONYM: w
    @_id: "RULE 2 for m"
    @_log: "LOG 2 for m"


