'Hebrew couple of <timeframe> aware'

def _format_timeframe(self, timeframe, delta):

    couple = u'2-{0}'.format(timeframe)
    if ((abs(delta) == 2) and (couple in self.timeframes)):
        return self.timeframes[couple].format(abs(delta))
    else:
        return self.timeframes[timeframe].format(abs(delta))
