static byte[] ac = {'\', '\'', '{', '}', '{'}; //not OK insert into tt values('\\'{}{')
static byte[] ac = {'\', '\'', '{', '}'}; //OK insert into tt values('\\'{}')
static byte[] ac = {'\', '\'', '{'}; //OK insert into tt values('\\'{')
static byte[] ac = {'\'', '{', '}', '{'}; //OK insert into tt values('\'{}{')
static byte[] ac = {'\', '{', '}', '{'}; //OK insert into tt values('\{}{')
static byte[] ac = {'\', '\'', '{', '}', '{'};