C1111233131211111211113313331323133313231333133322133313232213231311321   >>    C111123313121111121111331333132313331323133313332213331323221323131132   <<    C1111233131211111211113313331323133313231333133322133313232213231311323   >>      C1111233131211111211113313331323133313231333133322133313232213231311322   >>