"AAA and BBB-rated" . "BBB" . "Bond credit rating#Investment grade" . "triple-A ratings" . "Investment grade" . "AA+" . . "AAA bond rating" . "seal of approval" . "BBB+ by S&P" . "investment grade" . "AAA ratings" . "A\u2212" . "Bond credit rating" . "BBB- rating" . "bond credit rating" . "AAA bonds" . "BBB- investment-grade" . "BB rating" . "Triple-A credit rating" . "AAA" . . "credit rating" . "AAA-rated" . . "Triple A" . "BB" . "triple-A rated" . "A-2" . "bond rating" . "six notch downgrade" . "AAA credit rating" . "credit ratings" . "junk" . . "triple-A rating" . "bond ratings" . "junk rated" . . "AA-" . "rating" . "debt ratings" . "downgraded" . "rated" . . "bond" . "investment-grade" . "A-3" . "AAA and AA ratings" . "Bond credit rating" . "debt-rating" . "assigns a rating" . "BBB+" . "AAA bond credit ratings" .