How to compare elements of a vector with elements of a vector of vectors?

Question

My intention is after pushing pair to vector temp_pairs, compare it's 2 elements with the elements of the vector of vectors jumpers, and if one element of temp_pairs is equal to any element of jumpers .clear() the temp_pairs. The following code works, except for the 2 first pairs.

#include <iostream>
#include <vector>
#include <cmath>
#include <string>
#include <algorithm>
#include <cctype>
using namespace std;

typedef std::vector<int> vector_i;
typedef std::vector<char> vector_c;

vector_c control {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','x','w','y','z',' ','.'};

std::vector<vector_c> jump_input();

int main()
{
    jump_input();
    return 0;
}

std::vector<vector_c> jump_input()
{
    std::vector<vector_c> jumpers;
    vector_c temp_pairs(2);
    int jump_count = 0;
    char in;
    vector_c pair;
    
    do
    {
        for (int i = 0; i < jumpers.size(); i++)
        {
            for (int j = 0; j < jumpers[i].size(); j++)
            {
                std::cout << jumpers[i][j];
            }
            std::cout << " ";
        }

        for (int i = 0; i < 2; i++)
        {
            std::cout << "\n" << "Enter the " << i+1 << " of the pair number "<< jumpers.size()+1 << "\n";
            std::cin >> in;

            for (int j = 0; j < control.size(); j++)
            {
                if (in == control[j])
                {
                    pair.push_back(in);
                }
            }  
        }

        if (pair.size()>1)
        {
            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < control.size(); j++)
                {
                    if (pair[i] == control[j])
                    {
                        temp_pairs.push_back(pair[i]);
                    }
                }
            }          
        }

        // where the comparation happens
        for (int i = 0; i < jumpers.size(); i++)
        {
            for (int j = 0; j < 2; j++)
            {
                if (jumpers[i][j] == temp_pairs[j])
                {
                    temp_pairs.clear();
                }
            }
        }

        if (!temp_pairs.empty())
        {
            jumpers.push_back(temp_pairs);
            jump_count += 1;
        }

        temp_pairs.clear();
        pair.clear();
        in='\0';

    } while (jump_count<21);
    
    return jumpers;
}

Terminal image enter image description here

I tried series of if statements and for loops, and this is the best result i code reach.