E

⊕

B1 = IV

P1

C1

P<span style="color: rgb(41, 45, 52); font-size: 18px; font-family: -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Helvetica, Arial, sans-serif, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Symbol&quot;">₂

C<span style="color: rgb(41, 45, 52); font-size: 18px; font-family: -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Helvetica, Arial, sans-serif, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Symbol&quot;">₂

P₃

C₃

Pₜ

Cₜ

. . .

B<span style="color: rgb(41, 45, 52); font-size: 18px; font-family: -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, Helvetica, Arial, sans-serif, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Symbol&quot;">₂

B₃

Bₜ

ofb