C1111233133313231133133313231333133313113313232321323133313231311221121   >>    C111123313331323113313331323133313331311331323232132313331323131122112   <<    C1111233133313231133133313231333133313113313232321323133313231311221123   >>      C1111233133313231133133313231333133313113313232321323133313231311221122   >>