$(22)8.$ Using the slope$-$defection method, atalyse the structure shown. Draw shear force and bending moment diagrams. For each member on each diagram, calculate and indicate the maximum and minimum ordinates $($Minimum ordinates are frequently negative values$).$ All members have the same EI and are inextensible. Take advantage of symmetry and$/$or anti$-$symmetry where applicable.

Note that the loading is on beams $(1)-(2),(2)-(3)$ and $(3)-(4)$ONLY$.$