Block/Π

Π1

Π2

Πk

SUM

Block 1

X11R11

X21R21

Xk1Rk1

k(k + 1)/2

Block 2

X12R12

X22R22

Xk2Rk2

k(k + 1)/2

.

.

.

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.

.

.

.

.

.

.

.

Block n

X1nR1n

X2nR2n

XknRkn

k(k + 1)/2

Rank SUMS (Ti)

T1

T2

Tk

nk(k + 1)/2