B33113313132313113313223313331323132313233313112331323223313231323312121
>>
B3311331313231311331322331333132313231323331311233132322331323132331212
<<
B33113313132313113313223313331323132313233313112331323223313231323312123
>>
B33113313132313113313223313331323132313233313112331323223313231323312122
>>