C1111233131211111211113313331323133313231333133311211331323331123233213232321   >>    C111123313121111121111331333132313331323133313331121133132333112323321323232   <<    C1111233131211111211113313331323133313231333133311211331323331123233213232323   >>      C1111233131211111211113313331323133313231333133311211331323331123233213232322   >>