p = 11	q =  79

x that is a gap
[1580, 1582]		Length: 3
[1590, 1593]		Length: 4
[1600, 1604]		Length: 5
[1610, 1615]		Length: 6
[1620, 1626]		Length: 7
[1630, 1637]		Length: 8
[1640, 1648]		Length: 9