$$50 \times 5GHGHHG$$
$250\left(GH\right)^{3}$
$$50\times 5G^{2}HHHG$$
$$50\times 5G^{3}HHH$$
$$50\times 5G^{3}H^{2}H$$
$$50\times 5G^{3}H^{3}$$
$$250G^{3}H^{3}$$
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$750H^{2}G^{3}$