When I run my model below, my contrast 4 output map (HiFat + LowFat - NonFood) looks exactly like my contrast 3 output map (HiFat - LowFat). Does 3dLME handle these types of contrasts similar to contrast 4, 5 or 6?

3dLME -prefix LME_GlucCntlvsGlucSal_GrpxSessxTask_n34_covaryWantingHunger -jobs 2 \
-mask MNI_T1_3mm_mask.nii.gz \
-model 'Wanting*Hunger+Session*Task*Group' \
-qVars 'Wanting,Hunger' \
-qVarCenters '3.89,4.45' \
-SS_type 1 \
-ranEff '~1' \
-num_glt 6
-gltLabel 1 'HF-NF' -gltCode 1 'Task : 1*HiFat -1*NonFood ' \
-gltLabel 2 'LF-NF' -gltCode 2 'Task : 1*LowFat -1*NonFood ' \
-gltLabel 3 'HF-LF' -gltCode 3 'Task : 1*HiFat -1*LowFat ' \
-gltLabel 4 'AllFood-NF' -gltCode 4 'Task : 0.5*HiFat 0.5*LowFat -1*NonFood' \
-gltLabel 5 'Eugly_AllFood-NF' -gltCode 5 'Task : 0.5*HiFat 0.5*LowFat -1*NonFood Group : 1*Eugly' \
-gltLabel 6 'Sal_AllFood-NF' -gltCode 6 'Task : 0.5*HiFat +0.5*LowFat -1*NonFood Group : 1*Saline' \


Thanks,

Cheryl