C1111233131211111211113313331323133313231333133313232233133313331323322121   >>    C111123313121111121111331333132313331323133313331323223313331333132332212   <<    C1111233131211111211113313331323133313231333133313232233133313331323322123   >>      C1111233131211111211113313331323133313231333133313232233133313331323322122   >>