For any positive integer l, let bl(n)\documentclass[12pt]{minimal}
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\begin{document}$$b_l(n)$$\end{document} and Bl(n)\documentclass[12pt]{minimal}
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\begin{document}$$B_l(n)$$\end{document} represent the number of l-regular partitions and l-regular bipartitions respectively. By employing q-identities, we prove new congruences for b11(n)\documentclass[12pt]{minimal}
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\begin{document}$$b_{11}(n)$$\end{document}, b19(n)\documentclass[12pt]{minimal}
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\begin{document}$$b_{19}(n)$$\end{document}, b55(n)\documentclass[12pt]{minimal}
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\begin{document}$$b_{55}(n)$$\end{document}, B11(n)\documentclass[12pt]{minimal}
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\begin{document}$$B_{11}(n)$$\end{document} and B13(n)\documentclass[12pt]{minimal}
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\begin{document}$$B_{13}(n)$$\end{document}.