3An offence under any of the following provisions of that order—
(a)article 12 (rape of a child under 13),
(b)article 13 (assault of a child under 13 by penetration),
(c)article 14 (sexual assault of a child under 13),
(d)article 15 (causing or inciting a child under 13 to engage in sexual activity),
(e)article 16 (sexual activity with a child under 16),
(f)article 17 (causing or inciting a child under 16 to engage in sexual activity),
(g)article 18 (engaging in sexual activity in the presence of a child under 16),
(h)article 19 (causing a child under 16 to watch a sexual act),
(i)article 20 (offences under articles 16 to 19 by a person under 18),
(j)article 21 (arranging or facilitating commission of an offence under articles 16 to 20),
(k)article 22 (meeting a child under 16 following sexual grooming etc.).