[3] Against his own son, the complainant B, who was the victim of sexual offences committed while DAF lived with Ms T, DAF admitted by his pleas the commission of the offence of anal intercourse, committed when B was under 12 years of age and in DAF's care, and aggravated by B being DAF's lineal descendant. He also admitted offences of unlawfully and indecently dealing with B whilst that child was under 12 years of age, and an offence of unlawful assault of B, which assault occasioned the child bodily harm. The assault was constituted by striking the boy on the head with the butt of a shot gun. One of the offences of indecent dealing consisted of DAF asking the child to suck DAF's penis, but the child bit it instead. The second consisted of DAF rubbing his own penis against his son's leg, on a separate, subsequent, occasion. B's age when hit with the shot gun and when those two offences of indecently dealing were committed was not described to the learned sentencing judge, but he was under 12; the offence of anal intercourse occurred when he was still attending kindergarten. A medical examination of him, made when those complainants went to the police in 2002, showed that his anus had a scar consistent with blunt penetration occurring that long ago.