C11111211113313112113313331333133313331333132322121111331323223311231   >>    C1111121111331311211331333133313331333133313232212111133132322331123   <<    C11111211113313112113313331333133313331333132322121111331323223311233   >>      C11111211113313112113313331333133313331333132322121111331323223311232   >>