C11111211113313112113313331333132313331322121111133313331323123313133112321   >>    C1111121111331311211331333133313231333132212111113331333132312331313311232   <<    C11111211113313112113313331333132313331322121111133313331323123313133112323   >>      C11111211113313112113313331333132313331322121111133313331323123313133112322   >>