Triple chat in Minecraft

i am trying to create three chats in Minecraft with three keyboard keys which will direct the messages to three groups of people. I have added three keys R, G, B to open three chat boxes on the screen to type the messages. They work exactly as the regular chat. they print to the regular chat. I need to print them on their respective gui's above the input gui's. I have appended some coded messages in each chat to distinguish the messages to be sent to different groups i.e printing to different gui's.

private KeyBinding keyBindingChat1;
private KeyBinding keyBindingChat2;
private KeyBinding keyBindingChat3;
@Override
public void preInit() {
super.preInit();

keyBindingChat1 = new KeyBinding("key.chat1.list", Keyboard.KEY_R, "key.categories.gameplay");
keyBindingChat2 = new KeyBinding("key.chat2.list", Keyboard.KEY_G, "key.categories.gameplay");
keyBindingChat3 = new KeyBinding("key.chat3.list", Keyboard.KEY_B, "key.categories.gameplay");
}

public void onClientTickOpenChat1Gui(EntityPlayer player, PlayerState state) {
if(keyBindingChat1.isPressed()) {
if(this.noScreenOverlay()) {
if(player.isSneaking()) {
client.displayGuiScreen(new GuiChat1());
}
else {
client.displayGuiScreen(new GuiChat1());
}
}
}
}

public void onClientTickOpenChat2Gui(EntityPlayer player, PlayerState state) {
if(keyBindingChat2.isPressed()) {
if(this.noScreenOverlay()) {
if(player.isSneaking()) {
client.displayGuiScreen(new GuiChat2());
}
else {
client.displayGuiScreen(new GuiChat2());
}
}
}
}

public void onClientTickOpenChat3Gui(EntityPlayer player, PlayerState state) {
if(keyBindingChat3.isPressed()) {
if(this.noScreenOverlay()) {
if(player.isSneaking()) {
client.displayGuiScreen(new GuiChat3());
}
else {
client.displayGuiScreen(new GuiChat3());
}
}
}
}

@EventHandler
public void onServerChatEvent(ServerChatEvent e) {
if(e.message.endsWith("Group1")) {
e.setCanceled(true);
for(EntityPlayerMP alayerList1)
a.addChatMessage(new ChatComponentText(e.message.substring(0, e.message.length()-6)));
}
else if(e.message.endsWith("Group2")) {
e.setCanceled(true);
for(EntityPlayerMP alayerList2)
a.addChatMessage(new ChatComponentText(e.message.substring(0, e.message.length()-6)));
}
else if(e.message.endsWith("Group3")) {
e.setCanceled(true);
for(EntityPlayerMP alayerList3)
a.addChatMessage(new ChatComponentText(e.message.substring(0, e.message.length()-6)));
}
else {
e.setCanceled(true);
}
}


The GUIChat1,GUIChat2,GUIChat3 are same as GUIChat but with smaller area to enter message.
Is there a way to print the messages to individual GUI's above the respective GUIChats? Do i need to override GUIIngame/ GUINewChat and create three new classes? Any help is appreciated.