B3313221211233132322331321123233313231333131211113313231323132322132311   >>    B331322121123313232233132112323331323133313121111331323132313232213231   <<    B3313221211233132322331321123233313231333131211113313231323132322132313   >>      B3313221211233132322331321123233313231333131211113313231323132322132312   >>