C11111211113313112113313331333132313331322121111133313331322331333132322131211   >>    C1111121111331311211331333133313231333132212111113331333132233133313232213121   <<    C11111211113313112113313331333132313331322121111133313331322331333132322131213   >>      C11111211113313112113313331333132313331322121111133313331322331333132322131212   >>