C1111233131211111211113313331333133313331311132113313231333132322112111   >>    C111123313121111121111331333133313331333131113211331323133313232211211   <<    C1111233131211111211113313331333133313331311132113313231333132322112113   >>      C1111233131211111211113313331333133313331311132113313231333132322112112   >>