rtokens: Returns take account of price moves and accrued interest .
pos: JJ NNS RB JJ TO JJ NNS CC IN DT JJ JJ NN JJ VBP VBN .
tokens: Only bonds freely available to institutional investors and with a certain minimum amount outstanding are included .
ltokens: Salomon 's bond index is calculated using all government bonds with over one year to maturity , weighted for market capitalisation .