C12313211232233312111111312111133133313331323133323131333122322132233111   >>    C1231321123223331211111131211113313331333132313332313133312232213223311   <<    C12313211232233312111111312111133133313331323133323131333122322132233113   >>      C12313211232233312111111312111133133313331323133323131333122322132233112   >>