C1111233131211111211113313331323133313231333133311221123231333132231   >>    C111123313121111121111331333132313331323133313331122112323133313223   <<    C1111233131211111211113313331323133313231333133311221123231333132233   >>      C1111233131211111211113313331323133313231333133311221123231333132232   >>