R1 magic circle 9hdc ss ch1 r2 2hdctog repeat ss ch1 (18) r3 1dc, 2dc in next repeat ss ch2 (27) r4 1 DC, 1dc, 2dcin next repeat ss ch2 (36) r5 1dc,1dc,1dc, 2dcinnext repeat ss ch2(45) r6 1dc, 1dc, 1dc, 1dc 2dcin next repeat ss ch2 (54) r7 5×1dc, 2dc inne
