(0,2),(0,3),(0,5),(1,6),(0,7),(1,10),(1,14),(2,15),(2,21),・・・(23,30)は不要であった

{1,2,3,4,5,6,7,8,9,10}{11,12,13,14,15,16,17,18,19,20}{21,22,23,24,25,26,27,28,29,30}

{1,3,5,7,9}{11,13,15,17,19}{21,23,25,27,29}

{1,5,7}{11,13,17,19}{23,25,29}

{1,7}{11,13,17,19}{23,29}

{}{11,17}{23,29}

{}{11,17}{23,29}

{}{17}{23,29}

{}{17}{23}

{}{}{23}

{}{}{}

＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝