List <NGlycanComplex> CreateByAddFucTerminal()
        {
            List <NGlycanComplex> glycans = new List <NGlycanComplex>();

            for (int i = 0; i < 4; i++)
            {
                if (i == 0 || table_[i + 12] < table_[i + 11]) // make it order
                {
                    if (table_[i + 12] == 0 && table_[i + 4] > 0)
                    {
                        var g = new NGlycanComplex();
                        g.SetTable(table_);
                        g.table_[i + 12] = 1;
                        g.SetComposition(composite);
                        g.AddMonosaccharide(Monosaccharide.Fuc);
                        glycans.Add(g);
                    }
                }
            }
            return(glycans);
        }
        List <NGlycanComplex> CreateByAddNeuAc()
        {
            List <NGlycanComplex> glycans = new List <NGlycanComplex>();

            for (int i = 0; i < 4; i++)
            {
                if (i == 0 || table_[i + 16] < table_[i + 15]) // make it order
                {
                    if (table_[i + 4] > 0 && table_[i + 4] == table_[i + 8] && table_[i + 16] == 0 && table_[i + 20] == 0)
                    {
                        var g = new NGlycanComplex();
                        g.SetTable(table_);
                        g.table_[i + 16] = 1;
                        g.SetComposition(composite);
                        g.AddMonosaccharide(Monosaccharide.NeuAc);
                        glycans.Add(g);
                    }
                }
            }
            return(glycans);
        }
        List <NGlycanComplex> CreateByAddGal()
        {
            List <NGlycanComplex> glycans = new List <NGlycanComplex>();

            for (int i = 0; i < 4; i++)
            {
                if (i == 0 || table_[i + 8] < table_[i + 7]) // make it order
                {
                    if (table_[i + 4] == table_[i + 8] + 1)
                    {
                        var g = new NGlycanComplex();
                        g.SetTable(table_);
                        g.table_[i + 8] = g.table_[i + 8] + 1;
                        g.SetComposition(composite);
                        g.AddMonosaccharide(Monosaccharide.Gal);
                        glycans.Add(g);
                    }
                }
            }
            return(glycans);
        }