C11111211113313112113313331333131133133313331333132212111133132312321   >>    C1111121111331311211331333133313113313331333133313221211113313231232   <<    C11111211113313112113313331333131133133313331333132212111133132312323   >>      C11111211113313112113313331333131133133313331333132212111133132312322   >>