see point 2
if ( _one . first == 0 ) _one . second = ( _one . second + 1 ) % size2 ; } } else if ( a1 [ _one . first ] + a2 [ _one . second ] > a2 [ _two . first ] + a1 [ _two . second ] ) { if ( a2 [ _two . first ] < a1 [ _two . second ] ) { Console . Write ( " [ " + a2 [ _two . first ] + " , ▁ " + a1 [ _two . second ] + " ] ▁ " ) ;