the most popular picture of Ram, sit aand laxman is Ram moving in front-follwoed by sita and laxman at last
well philosophers have given a wonderful analysis of this too
according to them and as we all know-Ram represents Paramatma
Laxman stands for jibatma(human beings)
devi sita is Shakti-anotehr form of Shakti is maya. mahashakti keeps us in illusion with teh world and so we cannot view Paramatma as and when we chose
to tear open thsi illusion, laxman worships sita. When sita is pleases,s he steps aside and laxman gets a GLimpse of Ram
that is , we have to please mahashakti and with ehr aid only can we attain supreme salvation