s among loadings</span></span>
<span><span class="st">     A=~ a*A1+a*A2+a2*A3+a2*A4</span></span>
<span><span class="st">     B=~ B1+B2+b3*B3+B4</span></span>
<span><span class="st">     C=~ c*C1+c*C2+c*C3+c*C4</span></span>
<span><span class="st">     # some equality constraints among thresholds</span></span>
<span><span class="st">     A1 | da*t1</span></span>
<span><span class="st">     A3 | da*t1</span></span>
<span><span class="st">     B3 | da*t1</span></span>
<span><span class="st">     C3 | dg*t1</