C11111211113313112113313331333133313331333132212111133133313331333132312213111   >>    C1111121111331311211331333133313331333133313221211113313331333133313231221311   <<    C11111211113313112113313331333133313331333132212111133133313331333132312213113   >>      C11111211113313112113313331333133313331333132212111133133313331333132312213112   >>