31 The only case which involved an effective sentence of 20 years imprisonment, there being none that were higher, was B v The Queen [2002] WASCA 236. The offender had pleaded guilty to sexual relationships with four of his natural children. In the case of two of the children the offending commenced when they were aged 6 and involved both penile penetration of the vagina and the anus. There were offences against a male child aged 4 which included anal penetration, and the offences against a daughter aged 3 which included penetration. In the case of Armstrong v The Queen, unreported; CCA SCt of WA; Library No 930401; 29 July 1993 the offender pleaded guilty to sexual offences against two stepdaughters, and was convicted after trial of sexual offences against a third. The offences took place at various times over approximately four years. The offences were varied but in respect of each stepdaughter there was one conviction of aggravated sexual assault involving penile penetration of the vagina. Many of the sentences were ordered to be served concurrently and the individual terms were adjusted because of totality. The effective term to be served was 17 years 7 months. After taking into account credit given for time spent in custody the effective total was 19 years (NB there is a misprint on p 4 where 18 years is noted). An appeal against severity was dismissed. In Morley v The Queen (supra) the offender pleaded guilty to offences against two stepdaughters and a daughter each of whom was under 16 years of age. There were varied acts of sexual abuse, ranging from fondling to full sexual intercourse. Abuse in some form had commenced when each complainant was approximately 9 years of age. The conduct had commenced in 1976 and the complainants were mature adults when the offender reported it himself to the police following a confrontation by all three complainants. The offender pleaded guilty under the fast track system. Remorse was a significant factor in mitigation. On appeal a total effective sentence of 17 years was reduced to 13 years. Shepherdson v The Queen (supra) involved sexual offences against a daughter, commencing when she was 4 years old and continuing for two years, which involved penile penetration of the vagina and anus. There were also offences against two younger daughters, commencing when they were 2 and 4 years of age respectively, which involved penile penetration of the vagina. There was physical injury to the two younger children. There were also offences against his wife. The sentences were increased on appeal to an effective total of 15 years imprisonment, but this term was determined after giving considerable weight to significant mitigatory factors present in that case, including genuine remorse, and after allowing for time spent in custody pending sentence. Jarvis v The Queen (1993) 20 WAR 201 involved an offender who was convicted after trial of repeated conduct over four years involving anal penetration of a stepson and the penile penetration of a daughter who was aged 13. Jarvis was sentenced to sentences effectively totalling 8 years imprisonment in respect of the offences against his stepson and a further effective 7 years imprisonment, to be served cumulatively, for the offences against his daughter, ie an effective total of 15 years imprisonment. An appeal against the severity of these sentences was dismissed.