C11111211113313112113313331333132313331322121111133313331322331333132321233131   >>    C1111121111331311211331333133313231333132212111113331333132233133313232123313   <<    C11111211113313112113313331333132313331322121111133313331322331333132321233133   >>      C11111211113313112113313331333132313331322121111133313331322331333132321233132   >>