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Elements of the group are displayed as words in the presentation $\langle a, b, c, d \mid a^{2}=b^{2}=c^{4}=d^{20}=[a,b]=[b,c]=[c,d]=1, c^{a}=cd^{10}, d^{a}=c^{2}d^{11}, d^{b}=d^{11} \rangle$ .
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