rr%%e%%f%%---------------------------#
rr%%a%%b%%------------x--------------|&&{"x":{"hello":"goodbye"}}
rr%%c%%d%%------------x--------------|&&{"x":{"ding":"dong"}}
rs%%a%%b%%---a---b---c-----d--e--f---|&&{"a":{"a":"b"},"b":{"c":"d"},"c":{"e":"f"}}
rs%%c%%d%%---a---b---c-----d--e--f---|&&{"a":{"a":"b"},"b":{"c":"d"},"c":{"e":"f"}}
