C11111211113313112113313331333132313331322121111133313331323123313133321   >>    C1111121111331311211331333133313231333132212111113331333132312331313332   <<    C11111211113313112113313331333132313331322121111133313331323123313133323   >>      C11111211113313112113313331333132313331322121111133313331323123313133322   >>