What I want to say is this后 的内容可以用冒号引出么?

I Know What You Want to Say You know what I want to say ? This is what I want to say to This is what I want to say to This is what i want to say 是什么意思? What i want to say is这是什么从句? yes.That's what i want to say that's excatly what i want to say是什么意思? they were what i want say to him,这话对吗 I‘m lucky （be）here to say what I want to say. I want to say sorry i will want to say I'm sorry I love you, that's what I want to say 是什么意思? What I want to say 为什么不要加助动词do阿,像what do you want to say 一样 I really do not know what you want to say,You want to say goodbye to me righ?waiting I really do not know what you want to say,You want to say goodbye to me righ?waiting i want to know what do you want to say这句话是对的吗 I don't know what to say.I only want to try something new what i want to say to you is that i like chatting with you ah ha