{{
{5,6,5,6,5,6,5,6,15,6,5,6,15,5,6,5,6,5,6,5,6},
{5,15,15,15,15,15,15,15,15,15,15,15,15,15,15,5,15,6},
{5,6,5,15,6},
{6,5,6,5,6,5}
}}