C11111211113313112113313331333133313231323223313331323222322131121   >>    C1111121111331311211331333133313331323132322331333132322232213112   <<    C11111211113313112113313331333133313231323223313331323222322131123   >>      C11111211113313112113313331333133313231323223313331323222322131122   >>