C11111211113313112113313331333133313331333132313331333133313113313231333123321   >>    C1111121111331311211331333133313331333133313231333133313331311331323133312332   <<    C11111211113313112113313331333133313331333132313331333133313113313231333123323   >>      C11111211113313112113313331333133313331333132313331333133313113313231333123322   >>