C11111211113313112113313331333133313331333132313331333133313331322132233312321   >>    C1111121111331311211331333133313331333133313231333133313331333132213223331232   <<    C11111211113313112113313331333133313331333132313331333133313331322132233312323   >>      C11111211113313112113313331333133313331333132313331333133313331322132233312322   >>