How can we determine the group with the presentation $G:=\left\langle g,h\mid g^4=h^4=1,hg=g^{-1}h \right\rangle?$

Question

Please how can we determine the finite group whose presentation is given as: $$G:=\left\langle g,h\mid g^4=h^4=1,hg=g^{-1}h \right\rangle?$$

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