C11111211113313112113313331333133313113121111331333132322112121   >>    C1111121111331311211331333133313331311312111133133313232211212   <<    C11111211113313112113313331333133313113121111331333132322112123   >>      C11111211113313112113313331333133313113121111331333132322112122   >>