29 If one assumes, as it seems to me one must, that her Honour was having regard to sentences of the order of those ordinarily imposed in respect of sexual assault, then the greatest possible allowance which could have been made for the effect of sentences the respondent was already serving would have been an allowance of 2 years, that being the period for which her Honour thought that he would be in custody in relation to those earlier offences. Added to a sentence of 4 years, which her Honour imposed, this suggests that her Honour's starting point was 6 years' imprisonment. In my view, having regard to the circumstances of the offence and of the respondent, to which I have referred, the imposition of what may be described as a "standard" sentence for a single act of sexual penetration of the vagina with the penis would, having regard to the several offences of which the respondent was convicted, appear to reveal error. However, it appears to me that error is also revealed if one considers that it appears that her Honour applied the totality principle by adjusting the sentence she was imposing so as to allow for the entirety of the 2 years' imprisonment which she thought the respondent had to serve in respect of other offences.